Description
- COROS Heart rate monitor with large band – Arm size (Large): 9.4 to 16.9 inches (24 to 43 cm)
- COMFORTABLE and QUICK CLEANING: The fabric band is soft and breathable, more comfortable to wear than a chest strap. You can quickly clean the band by removing the sensor of COROS Heart Rate Monitor.
- EASY TO WEAR and FLEXIBLE FIT: COROS Heart Rate Monitor’s band lays flat around your arm and locks in place with its textured surface. Set the perfect placement and tension on the elasticated band by sliding the buckle.
- ADVANCED SENSOR and PRECISE DATA: Housed in a tough yet sleek body and protected under a scratch-resistant cover, COROS Heart Rate Monitor’s advanced sensor will deliver reliable and accurate heart rate data monitoring to track your workouts in distraction-free comfort.
- LASTING BATTERY LIFE: 38 hours of full operation or 80 days of standby on a single charge. View the battery level on your COROS watch or app and use the magnetic cable to quickly recharge in 2 hours.
- WEAR DETECTION: With built-in wear detection, the COROS Heart Rate monitor automatically powers on and off based on when it is worn. Automatically connect to your paired devices every time you start a workout.
- MULTIPLE CONNECTIONS: Designed to work seamlessly with your COROS watches and apps, it can also simultaneously pair with up to three devices, including Sports Watches, Indoor Trainers, Bike, Computers, Phones, Apps, Treadmills, and Indoor Rowers. Bluetooth connection only, no ANT+ support.
Olga Palomares –
My watch would often go into cadence lock and provide wrong HR data on easy to medium pace runs. This optical armband heart rate monitor from Coros seems to have resolved that issue. The heart rate data now coincides with the perceived effort. The band is pretty snug and comfortable and stays on the arm once strapped. It is an optical HR sensor with an inbuilt battery and, an advertised battery of 38 hours. The battery dropped by just 2% after a 3hr activity – battery life looks promising. Although it is basically just the same optical sensor on my Coros watch and does not come with any additional data or sensors. It would’ve been a nice addition if they’d included an HRV measurement or a thermometer.
Geoff –
I use this regularly for indoor cycling, and it works great. My only complaint is that it stops transmitting when (I assume) the battery gets low. I ‘assume’ because I never get the orange ‘low battery indicator’ light. It just stops transmitting, even though it connects. Charge it up and it’s good to go again.
My experience may not be the norm.
That said, I do like it, it’s much easier to deal with than my HRM-Dual chest strap. I haven’t compared the two for accuracy, but also ride with my Garmin watch, and the two are almost identical in HR measuring numbers.
It is a bit annoying when it stops transmitting HR, since that means I can’t use it for that particular ride.
Kamal K –
Lätt att koppla ihop med min Garmin Forerunner 955 klocka. Allt fungerade direkt. Jag har tidigare haft ett vanligt pulsband runt bröstkorgen och detta är mycket smidigare, lätt att justera och sitter kvar på armen utan att behöva dra åt lika mycket som vanliga pulsband.
K. Walker –
I was a part of a voluntary COROS HRM device testing program for two months ahead of the public release for this device, and was so impressed with the metrics it provided that I felt it valuable enough to buy as a gift for a fellow athlete. This quick review reflects my experience with the device during testing (and afterwards), and is not sponsored by COROS.
About me: I’ve been an avid runner since 2012, trending towards longer endurance-based events. I’ve run a number of ultramarathons and a handful of 100 mile races. I also do a bit of road and indoor (stationary trainer) cycling as cross-training.
Things I like: This HRM appeals to me because of its simplicity and versatility. I like that there are no buttons (it senses when it is being worn), and I like the fact that once you set the sizing, it stays put and is easy to slip on before an activity. For sizing: I’m 5’-9”, 160-ish, and I still have plenty of slack in the strap…but I don’t do a lot of lifting. It is SO much simpler and WAY less noticeable than a chest strap. I also love the magnetic charger–even though it is relatively short (and proprietary). Charging is quick, and the battery life is ample, so it won’t be charging for very long anyhow.
Data accuracy: During testing I compared this new HRM to my Wahoo TICKR HRM, as well as data from wrist-based optical HR sensors (COROS Pace 3 and Apex 2 Pro watches). The short summary is that the most consistent data came from this COROS armband. The KICKR chest strap–while plenty accurate–was slower getting an initial reading before beginning an activity, and had some data drop-outs during the activity as well. Chest straps occasionally require adjusting during activities as they loosen and slip. Wrist-based HRM sensors work fairly well, but are somewhat activity dependent. Cycling (especially if venturing off-road) can jostle these sensors from wrist contact and can result in some inconsistent data too. The armband stays securely in place, and is so comfortable and light I often don’t notice I’m wearing it. During testing there were data anomalies from all devices, but the armband HRM produced FAR FEWER than any of the others.
Material thoughts: The armband material has held up well so far, but DOES tend to get stinky and discolored with wear. I’ve had mine since early July, and wash it with soap and water occasionally when I can’t stand the funk, and it cleans up nicely (see photos). Replacement armbands are also available, though I can’t see needing one for a good while.
Something I wrote to the product testing group during evaluation: “The more I run with both an arm and chest strap the more I LOVE the arm band. I’ve now got a rash from the chest strap and it drops signal more than any of the three HR options. I’ll admit that I’m a sucker for simplicity, so would normally just use readout from the watch (decent)…but if I need an accurate and responsive HR readout, I’m picking the HR31.”
Summary: This armband doesn’t miss a beat (ha!) and makes a lot of sense for an athlete interested in reliable HRM data across multiple sports. I initially wasn’t too keen on adding another device to my quiver, but this HRM earned its place, and would be a worthy asset to those who value consistent accurate data across disciplines.
Kamal K –
perfetto per monitorare al meglio il tuo cuore durante un attività, consiglio a tutti di prenderlo in quanto è nettamente superiore alle rilevazioni del device da polso ed equivalente alle migliori fasce toraciche avendo molti piu vantaggi.
Janet Tackett –
Bottom line up front: buy this heart rate monitor, you won’t regret it.
I’ve spent the last few months putting this COROS armband through its paces. As a triathlete with a CrossFit problem, here’s what keeps me coming back:
1. Accuracy. First and foremost, it consistently delivers results on par with my Polar H10 (which now sits in a drawer as a result) and, in some cases, was more accurate (especially activities that sometimes involve weird chest movements or jumping, like in CrossFit). It showcases an absolutely snappy response to abrupt changes in HR during interval training. And, because it’s an optical HRM, zero issues with tracking correctly from the moment you hit start, no matter the environmental conditions (unlike the age-old problem with humidity on chest sensors).
2. Comfort. It’s so light you completely forget it’s there! Importantly, it never rubs, chafes, or creates discomfort. On the upper bicep, it’s never in the way, no matter the activity. The band itself easily adjusts to any arm and it can slide right off the sensor to throw in the washing machine and clean (when was the last time you washed your chest sensor??).
3. Ease of use. Frankly, it just works. If you own a COROS watch, this will sync right up. Though, while it works seamlessly with the COROS ecosystem, it will work with any Bluetooth-connected device (I have paired it with indoor rowers, other exercise machines, and non-COROS watches without problem). Lastly, this thing has a long battery life and is rechargeable, so you never have to worry about not having a spare battery on hand (the app or watch will even tell you how much battery is left).
Zero regrets on this purchase. I strongly recommend the COROS armband to anyone who asks.
MK –
Funktioniert bei mir super. Die Differenz von der Handgelenkmessung am Anfang der Läufe, sind damit hinfällig.
Bin zufrieden
K. Walker –
Can’t say enough good things about this arm band HR monitor. I have a top of the line Polar H10 chest strap and there’s no comparison. I’ll NEVER go back to the chest strap!!!
The chest strap isn’t comfortable and always feels like it slips down. It also randomly loses connectivity. The Coros HR armband is so comfortable you forget you’re wearing it. It’s also (most importantly) VERY accurate and doesn’t lose connection.
Another very important thing to consider is the fact that the optical HR on all watches doesn’t work that well, especially for women who aren’t vascular. The optical on the watches seems to have a hard time picking up the pigment changes from the wrist. This arm band has completely solved that problem!
Another thing that shouldn’t be overlooked is the simplicity and battery life. Simple because all you have to do is keep it charged and put it on. It’s all automatic. Turns on and off by itself. And one charge will last about 30 hours.
There are now four people in our running group who own the Coros and everyone loves it. Coros, you knocked it out of the park with this armband technology and you deserve credit for that. Thank you and keep up the good work.
P.S. – Although I own the Apex 2 and love it, the best bang for the buck at this time (01/30/24) would be to combine the Pace 3 with this armband HR monitor.
M.Icha –
Really happy with the band. Affordable price for good accuracy.
Take no time to connect into my Coros app and been able to use it.
The strap is really comfy and once you have done an couple of runs became normal feeling.