Heart Rate Monitor, Comfort, Easy to wear, Auto-wear Detection, Advanced Sensor, Precise Data, Bluetooth, 38 Hours Battery Life, Connects up to 3 Devices at Once, for Run and Bike-Grey

I am using it with my coros watch and it's perfect match

Coros Dura is reliable, accurate, and easy to connect with. I've been using it for cycling and getting excellent results. I recommend Coros as it provides better outcomes with this device. The battery consumption is low, allowing you to trust it for up to 20 hours.

Excellent performance

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.

This heart rate monitor is designed to be worn on the upper arm. It seamlessly synchronizes with the watch and has an automatic on feature. It is user-friendly and hassle-free.

This doesn’t even work don’t recommended

Buy this watch only if you already have a smart watch and want to improve HR accuracy. If you do not have a smart watch , then the coros HRM will connect with the app but : 1. coros app will not receive the HR data 2. you need to use third party apps like Strava to receive data 3. Even with third party apps, you will have to manually start recording an activity to record HR 4. no 24/7 recording of I wanted to get my father a continuous 24/7 HR monitor (he had fitbit charge 6 which died within a year) and did the mistake of buying this device as a replacement ( In my defense - as of october 2025 the product details and various youtube videos mention that coros HRM can be used without a watch but they do not mention the lack of functionality in that setup ) I have had a great experience with coros pace 3. however with coros HRM its just a wrong purchase The device itself is probably good ( will update review after few months ) .

Game changer. I've been using chest straps for the last 15 years. Never really any issues other than batteries dying. Gone through Garmins and then maybe 3 wahoo ones. All fine I guess, the Wahoo's only seem to last a couple of years for some reason. Now, pre-setting the strap for these has always been just one of those things I did, either under a tap and embrace the chill when you put it on, or the spit and rub which always had a mildly kinky vibe to it :) Not to mention the more often than not coffee scented strap after a while. Then I finally cave a get this little switcheroo. I wasn't sure how good it would be using the same kind of system that watch based heart rate sensors use (which always seem to lock on to cadence for me). But this thing is solid. Comfy, requires no spit and means i can add a new weird tan line to my arm come summer. But in seriousness, it's accurate, connects to my suunto watch, (i've not used the coros app), is accurate and i honestly forget I'm wearing it. Plus being that it sits on my upper arm and not at the core of my body, it doesn't get anywhere near as sweaty in the heat.

Muy buen medidor de frecuencia, siento más confianza que con el reloj. Le dura mucho la pila y es muy cómodo

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.

インターバルや閾値走などの時に時計だけでは心拍数の動きが極端でしたが、スムーズに測定してくれるので狙った心拍数を刺激しやすいです。Eペースジョグでも精度が良いのでオーバーペースかのチェックにもなるので重宝しています。また、装着しやすさと軽さがいいです！

Très confortable, adhère super bien au bras Excellente autonomie, Beaucoup plus fiable que le capteur FC de l’Apple Watch Utra (qui a tendance à perde la mesure) Se connecte très facilement à L’Apple Watch , tapis de course technologym… Je recommande à 100%