Apple watch 7 heart rate accuracy reddit

When I’m sleeping it tends to hover between 37-40. Are the values of the Apple Watch accurate? I had a heart rate of 160 today while running on a treadmill, and when I went to watch for a while, the Apple Watch recorded a heart rate of 60. The watch takes a semi-accurate snapshot every few minutes. if it is concerning to you, or you notice other symptoms that could indicate the low heart rate also has an abnormal rhythm, that would be reason to be quite worried and see your cardio doc ASAP, because they will want to do an electrocardiogram (ECG/EKG) test. It’s not zone 5 if you can stay in it for 30 minutes. Looking at the link, I agree. It's also calculating your zones based upon the "220 - age" algorithm. So the heart strap/PM5 monitor shows a maximum spike of my heart rate as 114 bpm whereas the Ultra is showing a maximum spike of 150 bpm. That been said, if you doubt the accuracy of the heart rate values that the Apple Watch gives, you can simply double check those values by doing yourself a heart rate measurement in the moment and compare the values. That helped figure out what a "good" heart rate variability should be. Members Online Suddenly this $10/mo apple watch plan is costing me $28 a month because of taxes and "fees" The Apple Watch measures heart rate, not power output. You’ll need a chest strap HRM for that. Series 6,7,8, and 9 in theory all the same heart sensor, not sure of the processor makes much difference in the heart monitoring functions, but if it does go for the 9, otherwise, get the cheapest you can find out of the series 6-8. Between the anxiety of having it turned on versus anxiety that it’s off and the calculations are less accurate, I would imagine the latter is the better scenario to live with. Jul 18, 2023 · Here's a screenshot from the Apple Fitness app. In any case, video above, links to data sets below. While recording an Activity like Walking with an Apple Watch App it records the heart rate between 12-15 times a Minute (every 4-5sec. The heart rate data of the Apple Watch is very accurate and consistent. First, to take accurate measurements the Watch needs to be cinched moderately tightly around your wrist and close to your hand. I have my low heart rate alarm set to 40 bpm now. ncbi. Wearables Mobile app Information & communications technology Gadgets Technology Construction technology As others have said regarding heart rate function very accurate. I guess that may be Apple uses this formula: target HR = [ (max HR - resting HR) x %intensity] + resting HR. The app started to warn me about the risk of premature heartbeat. Dry_Masterpiece_7749. If your hand does not experience shocks like during sport exercise - very accurate. The sensor is probably very accurate, but the algorithm seems to be faulty. Resting is in low 50s and it gets into the high 40s However when I am at the gym and I look at my heart rate it sometimes drops to well below resting rate and stays there for a minute or two even though I know my HR is much higher than that. If you take a nap, it will completely change your RHR as well. If you are concerned about accurate heart rate monitoring I probably wouldn’t get an apple watch anyway. Also, larger bodies (6ft+) height tend to have a much lower heart rate. I’ve been using whoop strap 4 for the last year and recently have been questioning the accuracy of the heart rate readings. There’s been discussion about how accurate the heart rate sensor is. apple watch is fairly accurate at measuring HR, especially the newer models with the I kind of accepted that fact after a while and invested in a wahoo chest strap heart rate monitor for fitness (which has 99% accuracy, it measures electrical signals directly over the heart). Too tight, well, your heart rate won’t matter if your wrist hurts and hand swells. i know, i was just wondering, especially because the lowest readings are mostly false, except maybe While resting the heart rate is +-1,5% accurate compared to a heart rate strap. Get something like the sports loop. Alarming. Reply reply. Let us know what you get! I find it very accurate (within 3BPM) when compared to my Wahoo heart rate monitor chest strap. It locks on for a while then all of a sudden it stops working. This takes into account your resting heart Apr 18, 2022 · Tim Cook initially presented the first Apple Watch in 2014 as a smart fashion accessory. 72-116. I train for endurance religiously and heart rate is the word of god. You might use whichever online HR zone calculator with your max & resting HRs and then manually update HR zones in Watch -> Workout -> Heart Rate Zones -> Manual from you iPhone. Compared to my Series 7, the heart rate monitoring has been pretty unreliable during runs. Updated the watch and the iPhone to the latest software. ECG is a single line. Run slower. I just check mine and it is also shocking . Apple Watch calibrates itself from GPS (to learn your approximate stride length depending on your pace) and then uses this Heart rate for sure the Apple Watch is ahead. The new Apple Watch Series 7 focuses on health features and makes the most of its sensors […] it's just an outlier. Point is low heart rate (<40) doesn't automatically mean pacemaker. I personally think that the Apple Watch is also more accurate than the Fitbit is in calories burned. Those things aside, the display brightness is great for sports, no issues there. OP means apple heart rate zones UX looks exactly like the one from the Gentler app. Even during workouts. If you may have got not enough sleep or have got fever bmp would be much higher than usual. Also check that you are still wearing the Apple Watch tight enough, maybe the band has stretched a little. My watch gives me an incredibly high BPM number each day. In my experience, it provides consistent results - and it is more accurate than the heart beat monitor on gym machines. The thing about my galaxy watch 4 is--whether or not the heart rate sensor itself measures the correct beats per minute--it will just intermittently not measure heart rate. Newer shows relatively the same extent of agreement with the polar sensor, but there are fewer points. Next, enter your Date of Birth, and tap Continue → Read the onscreen info and tap Continue . Just get the older Series 7. It’s entirely possible. ). Atrial Fibrillation. today i looked down right after doing a ton of burpees and my heart rate was FORTY NINE You can select for it to continuously measure heart rate. The most important thing is to take your age into consideration at my heart rate 45 years plus, a pacemaker might be needed. Online comparisons confirm apple watches to be way more accurate My watch registers my resting heart rate as 44 bpm while sleeping. In 41mm. Second if you want highly accurate and responsive heart rate measurements, as opposed to representative averages, you will not get them from a watch. Apple Watch heart rates were basically dead on with the medical equipment, and the Fitbit was 10-20 bpm off most of the time. I use an Apple Watch and have found the heart rate to be fairly accurate even while swimming. Yes very accurate. Yes - when recording a workout. There's several factors: blood pressure, conditioning, nutritional deficiencies, underweight, tall stature, etcetera. Heart rate - For what it is worth, I’m currently in cardio rehab from a little (ok, not so little, was gone and paddles brought me back) cardiac arrest episode…. I've noticed that Apple watch seems to measure resting heart rate as the mean between your lowest heart rate, and your max heart rate. which kept coming right off(I was sweating like a stuck pig ^^;) after they saw how close its accuracy was, same as the OP's, within 2-4 bpm. ** When you place your finger on the May 5, 2020 · It also gives you a sleep score from one to 100, taking into account your sleep quality and duration. Many comments that watches do not measure BP. Treadmill measures the belt distance which, in theory, would be correct, but the problem is - treadmill is measuring the flat belt while the outside isn't as flat. I wear the watch fairly tight on my wrist so that may help. Generally not. Supposedly the Oura live heart rate uses more accurate sensors than the workout or sleep heart heart rate. 1 would fix that. Pictures are the data results from the same workout on the same day. Whenever, I switch wrists I always go to the settings app and configure the orientation to make sure it is correct. you wouldn't hit 200 and then go right back from that without feeling it. but usually at night it’s better. So, as someone used to the latter but enjoying the Apple Watch and it’s accurate heart readings. Tap the Browse tab, then tap Heart → Electrocardiograms (ECG) → tap on Set Up ECG App . When it checks my heart rate on it's own I'm around 50-60. Very accurate. New comments cannot be posted and votes cannot be cast. It's tested against a polar heart rate strap & it's confirmed to be 20-30 bpm higher that what your actually doing. Also, the zones are calculated using the heart rate reserve method, not a simple percentage of max heart rate. I have a series 8 if that matters. nih. I open the heart rate app over and over again trying to get a reading for half my easy runs. Illness, pregnancy, injury, etc it is hard to say what. That's not too shabby! Calories Burned: This one's a bit trickier. I would recommend to use the sleep schedule to make sure it excludes those low values. I've activated all the features including ECG. In my perfect world my Apple Watch is not accurate and it is a software issue. My fitbit is regularly 20-50bpm off from my actual HR. When testing if start it myself I can't get lower than 90~. Reply reply More replies More replies More replies More replies your_message_here Check with finger on carotid for six seconds and times by ten. Ignore it. Though, at the obvious and well discussed here battery life trade-offs. your wrist is clenched during the exercise (because you're holding the handle). Wow 90 is pretty high. I’ve done some similar exercise stuff before that’s had the same result. That’s pretty inaccurate imo. I was a bit worried about this and was wondering if this might be known to others. Sep 14, 2018 · The Apple Watch’s ECG and the ability to detect atrial fibrillation (an irregular heart rate that increases your risk for stroke and heart failure) will launch later this year, while the feature kcasper. It's the watch. From everything I've read, Fitbit has never been the most accurate on BP monitoring. Is there anyway to recalibrate it or is this no longer a reliable source for my heart If yes, could affect accuracy. Heart rate 55 blood pressure good , train every day . Additionally, consider reaching out to your physician or trainer if you have one to ensure that everything is okay. I've tried everything with my iwatch 7 and the heart rate monitor is crap. 5hrs of workouts yesterday, and the Apple Watch was dead by 7PM (put it on wrist at 7:30AM). Gyrta. i'm used to it being off occasionally in my workouts, but today it was off the entire workout. Rumor has it that the Apple Watch will get it eventually (2024 at the earliest, supposedly), but I doubt it’ll be as accurate as a standalone monitor. For the last month:Resting: 56-64 bpmWalking: 91-119 bpm. Find a pulse and count for 10 seconds, multiply by 10. Have had a Fenix 7 SS for two weeks and today was the first time I’d had it up the hills. At best the whoop is passable imo, but don’t rely on it for accuracy. So I want to know, how accurate is the heart rate The apple watch average is always within 3 bpm of what the h10 measured, the whoop has been off by as much as 20 bpm. Its way cheaper and enough. What I like about the polar sensor is that it measures the HR non-stop, I read somewhere the Apple Watch measures the HR every ten minutes or you have to go to the app to see your heart rate. I have been using the Apple Watch and a Garmin Forerunner for running, cycling and strength training for a long time and the heart rate data is practically identical. Just get a Fitbit. I was having no issues with the heart rate syncing with Apple Watch up until the update last month. Highest ever was 197 probably a glitch. It's a norm, so will not capture more outlier cases: in the lower cases, bradycardia is one reason, but athletes is my experience also tend to average below 60 (I do, even sitting at my desk or working on the sofa, my whoop often think I am having a nap while I am working because of that; and I am not even a strong athlete The heart rate tracking of the Apple Watch in pretty accurate. Per the Apple Health app, for the last 7 days:Resting: 56-61 bpmWalking: 95-117 bpm. The Apple Watch had my average hr at 150 and the whoop had it 138. It seems to be more of a problem in colder… i wear my apple watch every day when i work out. nlm. I have been dealing with this also! Title says it all. Accuracy Apple Watch heart rate. Using Polar HR sensor improve significantly my VO2max and I didn’t see a difference regarding calories burned, with or without my Polar, it’s the same. There are several reasons to why wrist HR could be less accurate. I've downloaded an app called "heart watch" which shows you average, minimum and maximum readings for each day. Blood oxygen saturation: SO2, people have mixed reviews, but mine has been nearly 99% accurate and detected huge drops whilst sleeping. i do HIIT where my heart rate stays around 150-180 the entire time. Hiking in the mountains for around 8 hours and the watch told me my average HR was around 100bpm with a max of 125. My zone 2 according to the watch is 134 - 147 and my zone 2 with that fomula is: 134 - 148. 7 × age)] or the Jackson formula [206. if it happens frequently then you can check the watch against an inexpensive heart rate monitor. In the same bracket . I am a 29 yr Male who is very active (Exercise 60-90 minutes 6/7 days a week) and recently started wearing my apple watch to bed and noticed 5-8 times throughout the night i get a warning that my heart rate drops below 40BPM - is this normal? A couple of weeks ago, I decided to wear my watch on my left wrist and go for a run. I was surprised to notice that the galaxy watch 4 has a higher accuracy rating than the venu 2 plus. When I have checked my resting heart rates it always reported it to be very high. I don’t have the Fitbod watch app so I just use the App on my phone. And Zone 2 is from 60% to 75%. Generally the Apple Watch heart rate tracking is very accurate. My first run with the Series 9, my heart rate didn’t seem to record for almost half of the run. Yes, they are accurate. First, check the ECG app, especially when the watch notifies you. but it's likely that it was just a fluke. Today the ultra was 10-12 bpm slower. I was hoping 10. The average is usually close to correct. It says that it is 40, but while relaxing and looking at my current heart rate, it is usually between 60-70. Not tighter than you would wear a traditional watch. Check if the back sensor is not dirty or too scratched. Hi . What is your heart rate range? 35 to 175 if i look at the year scale in the Health app like that. Fabric so no perspiration or water accumulating like the silicone like sports band, and simple to adjust to just the right fit with the Velcro closure. I use the Peloton app without the bike (just using my own spin bike). They're different and orthogonal measurements. Apple Watch resting heart rate accuracy. Now every class is missing 10-20% of the heart rate data. Jan 21, 2024 · After the study, researchers found that both the Apple Watch Series 2 and Samsung Galaxy Gear S3 achieved a 100% accurate heart rate within 10 bpm. Heart rate accuracy. gov/30888332/ Both the Apple watch and the Pixel watch are far more accurate than the Galaxy Watch. The Fitbit takes your resting heart rate throughout the day and night while sleeping and then averages it on a bell curve with a slight smoothing to keep it within a “trend or range” so you can see massive deviations for sickness or wellbeing. 5 to 3 miles of walking per day everyday for at least 5 years. The Fitbit Charge 4 tracks your light, deep, and REM sleep, plus your sleeping heart rate Samsung Galaxy Watch 4: Heart Rate Test (After Update) Archived post. Even with taking blood pressure medication, which also lowers my heart rate, and the atenolol, my pulse still ranges between 40-120 daily. I started manually checking my resting rate when apple would document it and have found it is off by over 15 bpm. Any comments welcome. Both of these result in about the same max heart rate that the Apple watch uses. Apple Watch Series 4, Series 5, Series 6, Series 7, Series 8, or Ultra2 also have built-in electrodes in the Digital Crown and the back of Apple Watch, which can measure the electrical signals across your heart when used with the Heart Rate app or the ECG app. So, diving into the Apple Watch's accuracy, there are a two things to consider: Heart Rate: Generally, it's pretty spot on. It seems that fitbit only factors your non-workout heart rates into the resting heart rate number. There are other ways to get a somewhat more accurate estimate, but the formulas are the least accurate. VO2 max I think is garbage as well . Monitor your heart rate with Apple Watch. 1. i’m not an athlete either. I've found that during high intensity weight training, the heart rate monitor isn't that accurate at allstarts dipping to around 65 bpm during the most intense parts of the workout. I did about 2. In its current state, the Apple Watch will continuously monitor your heart beat with it's optical sensor, and if it detects an arrhythmia, prompt you with a notification at which point you can conduct an ECG. Does anyone know much about Heart Rate Variability (HRT) and/or its reliability on the Apple Watch series 7, most up to date operating system at all times… I’d like to think that I’m active / in above average shape: I have averaged 2. If the average has changed recently, more often than not there is a change in your body. r/AppleWatch is the community to discuss and share information and opinions about Apple Watch, the smart watch from Apple. Running, hiking, cycling, gym. Whole foods blah blah . You may always check it by counting your heart beats for duration of 6 seconds and multiplying by 10 - you will get about 94% of accuracy. I tend to have an average "regular heartbeat" of 80 but my minimums can be as quite low (38) and my maximums as high as 157 (todays readings) Today I have a reading that says 12:59pm - 81, 82, 41, 90 & 81 - all reading from the same Garmin will also continuously monitor your heart rate while Apple Watch only takes discrete measurements at 10 minute intervals. During my runs, i wear my watch underside of my wrist and 2 fingers above my hand. Resting 55-65, 85-105 while walking flat roads (5-6km/h) 44 years and workout nearly everyday. And I know when ur sleeping heart rate typically drops a few points. Since I am on prescription drugs to lower my heart rate, I mentioned this to my cardiologist. . So today I ran a 40 min run and tracked using whoop and an Apple Watch Series 7. Open the Health app on Apple Watch paired iPhone. My heart rate was 144 when I went to sleep, was 46 when I woke up. If you are feeling unsure, check your heart rate manually right after your workout to compare it with your Apple Watch. The heart rate is usually a bit lower when we sleep. It's the first part of the run where the inaccuracy occurs where the average heart rate should have been about 125 but was reading intermittently and Apple uses heart rate in its algorithms as a vital data point to increase accuracy (alongside gyroscope, accelerometer and GPS etc). Huawei watch D does. 67 × Age)]. The Fitbit, on the other hand, achieved only 88% Hi All, I have the Series 5 Apple watch and recently have been wearing it to bed. I noticed when I was working hard my heart rate would only read in the 130s, but then when My max HR is like 20bpm above what I get from the 220-age formula. Heart rate measuring is old and proven technology now. If it keeps going off I’d check with the doctor yo. I’m not sure about the accuracy for the resting heart rate my Apple Watch shows. I went on a all out 5K run and it recorded my heart rate twice during the run. Apple doesn’t seem to understand that you are sleeping and thus I think it’s misleading. According to the formula, my max heart rate is 179, but i routinely hit 185-189 in a difficult workout. How accurate is the actual heart rate monitor? Related Topics Apple Watch Smartwatch Find My Apple Inc. I saw somewhere that the resting heart rate includes your sleeping heart rate. I went from 68kg to 63kg ever since incorporating hiit into my routine. It's accurate, Huawei Band 8 user here. I hope I am doing this right as I could use your help! I used my apple watch through the Peloton watch app last night to monitor my heart rate during a spin workout for the first time. Heart rate zones in workout section on watch has incorrect max heart rate. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. I'm only 34 but can regularly sustain efforts in excess of 90% my APMHR for an hour. It turns out my "average" as reported by default didn't have much insight since it took readings at very different times and an average of HRV isn't really a good insight. i have the SE 2nd gen and was wondering how accurate the heart rate monitor is. And the watch is dead nuts, within one anyhow, to the EKG heart rate the nurses are getting while I’m doing the rehab exercises. (example I may be on the bike for 5 min w/HR at 135 . A study from the Cleveland Clinic back in 2017 found that during activities like cycling and walking, the Apple Watch was off by just about 2%. You need to test your actual max heart rate and set your zones accordingly (use heart rate reserve formula). However, as early as 2015, the marketing focus shifted towards health and fitness, with heart rate monitoring as one of the critical components. Hi! I like swimming and as expected my AW5 isn’t always great at taking heart rate readings in the water. A band that fits improperly makes using Series 2 heart rate accuracy? Hi everyone, I’ve been on a bit of a fitness kick for the last 6 months or so and have been using a Mi band 4, I figured if I kept up the fitness habit I’d reward myself and invest in an Apple Watch. Decent. Scanning through the comments, I'm slightly surprised to find my heartrate seems higher than most. i know it's not the most accurate heart rate monitor, but it's close enough for my purposes. If confirmed, it might be considered safe to incorporate the Apple Watch in HR-guided training programs in the setting of cardiac rehabilitation” https://pubmed. “In patients with cardiovascular disease, the Apple Watch measures HR with clinically acceptable accuracy during exercise. The resting heart rate is heavily influenced by the heart rate when your sleeping. Already posted there, just wanted to get as many responses The only way to get an actual measurement is a treadmill stress test. ever since i’ve gotten it i’ve had multiple recordings every day of my heart rate going as low as 43, typically during the day. Yesterday I had a huge pain, took some paracetamol and went to sleep. The readings from about 18:20 onwards seem pretty accurate - about 125 - 130 average rate with a climb to ~140 at the end for the uphill slog. It seems fine while walking. But it is advised that you wear it above the humorous protrusion on your wrist (that little bump on the outside of your wrist) so that it actually tracks blood vessels. In my first 5 activities, I compared the values to those from a polar H10 chest strap. I think I'd try the Apple Watch subreddit they'd probably know more. This is normal. Award. The Apple Watch has been dead on with its heart rate readings for me. 2. Samsung wonders why people are switching to iphones everyday. Apple Watch workouts still shows a max heart rate of 179, but several workouts had a heart rate as high as 188, and the data hasn't updated over the last 2 or 3 months. Pretty darn accurate. Toddlers and even animals have much higher, 120+bpm average heart rate. If set to calculate the heart rate zones automatically it says that the…. Nope. A garmin for Christmas I reckon Heart rate accuracy. I’ve had an Apple Watch SE for a year and a half. heart rate for the age. Now while doing a workout on bike trainer the apple watch ultra 2 was sometimes 15 bpm faster than on a Polar H10 chest strap. With Apple Watch it is registering at 87bpm. 1. But I have heard that people with darker skin tones have less accurate results. That means the arrhythmia detector. Recently added HIIT into my routine like 3 times weekly using fitness + and my RHR dropped from 42-45 to 39-41. He said it was fine unless my blood pressure also plummets or if it drops below 40 beats per minute. The watch screen itself shows as unpaired and has no heart rate reading after that, either. My general issue with the initial firmware wasn't so much the consistent accuracy of heart rate, it was more that Dec 12, 2018 · The reason to start worrying, is because my Apple Watch gives abnormal rates. OP • 6 yr. You can get a withings blood pressure monitor. Unfortunately I don’t think the Fitbit heart rate is very accurate. And tight. not terribly useful data. However, this does not happen on my right wrist. I have both and only use the Garmin when I care about my readings. Heart rate depends on age and is lower the older you are. Idk how each one tracks that specifically, but I think that Apple’s technology is a little more superior than what Fitbit uses in their watches. I had a nuclear stress test at my cardiologist's office 2 years back, and the apple watch ended up being used over the sticky sensors. Reply. I have manually measured my heartbeat and compared it to the watch - and it has been pretty close. I'm using an Android 13 phone so I had to install the Huawei Health app manually. This morning I wore them both at the same time to see how accurate the pixel watch is, and to my surprise, the watch was within 1 bpm of the chest strap Just took it now and it was off by 300% (Oura said 126, actual bpm was 41). For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute. It's amazing how resilient the human heart is and how much of a beating it can actually take before it fails. After the update to watch OS 10 my heart rate complications quit updating on my Ultra 2 and series 8. I don’t wear my watch to bed because I let it charge for work, however, my lowest BPM when I start the day (8am) is around 90 and goes well above 110 as the day goes on. So for example: I am 30 years old, my resting HR is 55 and my max HR is 190. My health app currently reports my rating HR for the day at 62bpm when my lowest value during sleep was 49. The watch app keeps trying to run and showing the workout icon on the top of the watch face (but the icon is white instead of green) until I start and stop a different workout, like from the Workouts app. My range at night was 83 - 95%, continuous. Thanks to folks in this group I was able to dive into the actual readings of Heart rate variability (HRV). Being a runner for 10 plus years and having used The correct answer is "neither, but treadmill is closer". During my second run, it seemed a little better but still seems to struggle recording my heart rate. In my case, I’ve found it pretty accurate for my needs. If you are moving a lot it might get this or that one wrong. Its sensor is also not super accurate, but few if any wearable heart rate sensors are. With that being said, mine seem accurate enough for what I use them for. Finally, you are on Set Up Complete screen appears → tap Done . . During the entire run (45) minutes the watch was only able to capture 5 minutes of heart rate data. I had the same issue before I set my zones correctly. Atrial Fibrillation (aka a-fib) is the most common cardiac arrhythmia, and up to 25% of people above the age of 40 Fenix. Mid 70’s. 9 - (0. ago. But the Oura workout heart rate benefits from averaging more samples, my experience is that Oura workout bpm is usually off by less than 15%. I don’t use that function but what I like is that you can also add it as a complication to your watch face to show your “live” heart rate. I’m a reasonably fit guy but I don’t think anyone could bang out four mountains with a heavy backpack and keep below 125bpm. Activities were cross-trainer, running on treadmill, and weight lifting. Second, seems you have a high BMI according to your description. They do all day monitoring and better sleep tracking than AW. It does exclude the low values during sleep. I don’t like the Apple Watch . APMHR (Age Predicted Maximum Heart Rate) is rubbish. My normal sitting heart rate is between 55-62bpm. •. If you at around 40 or more, or have a relative with a heart condition, it is better to just check with a physician. Generally I’ll start tracking my workout using the standard Apple Health app on my watch then start a workout using the Fitbod app on my phone at the same time (for some reason the Fitbod app doesn’t track my heart rate unless I do this exactly). Heart rate looks realistic but the heart rate zones seem to be not. It seems to be either the Tanaka formula [208 - (0. Power cycled the iPhone and watch. 20-40 range . all good. max. I’ve quit the applications. mg fs qh yn ik em bc jf un et