Skip to footer
$79.00
Coros Heart Rate Monitor Grey
In Stock: 2+
Price: $79.00
  • Color: Grey Stock # HRM-GRY
This item is not eligible for advertised discounts. Important Shipping Note: U.S. sales only.

Here at Running Warehouse, we want you to be completely satisfied with your purchase. If you are unsatisfied with your purchase for any reason, items can be returned with free return shipping within 90 days from the original invoice date.

We will match or beat any posted overall price advertised in-store or online on in stock items.

Overview

Track your heart rate with the COROS Heart Rate Monitor. This monitor ensures runners receive accurate data without compromising on comfort and durability during even the longest of runs. Equipped with a multi-channel optical sensor boasting 5 LEDs and 4 Photodetectors, the COROS delivers reliable heart rate data. This sensor is encased in a robust, stylish body with a scratch-resistant covering and securely fastened to your arm with a textured armband. Moreover, the elastic band is designed for flexibility and adjustability, thanks to a sliding buckle.

The Monitor can connect to three Bluetooth devices simultaneously for heart rate tracking and automatically syncs with your devices when in use. With a remarkable 38-hour battery life on a single charge and an 80-day standby period before needing a recharge, this monitor excels in both active and idle modes. Its built-in wear detection feature intelligently activates and deactivates based on your usage. You can recharge it swiftly in just 2 hours using a magnetic charging cable.

Product Details

Model Number: HRM-GRY

Features

  • Easily adjustable arm band design with easy removal of the sensor
  • Designed to comfortably fit around your bicep for an accurate measurement
  • Multi-channel optical sensor for precise heart rate measurements
  • Connect up to 3 devices via bluetooth
  • Extended standby battery life 
  • Wearable detection automatically powers on and off
  • Scratch resistant body
  • Magnetic USB charging cable 

Tech Specs

SensorOptical - 5 LED & 4 photodetectors
Fit18-32cm
Band MaterialPolyester fiber, nylon, spandex
Dimensions42.5 mm  x 28.4 mm x 9.1 mm 
Weight19g
Water Rating3 ATM
Wireless ConnectionBluetooth
Supported DevicesUp to 3 devices that can receive heart rate data
Battery Life 

Up to 38 hours in active mode

80 days in standby mode

55mAh battery

Magnetic USB type A charging cable

Charging timeLess than 2 hours  

Related Categories

Customer Reviews

4.9 out of 5
12 Customer Reviews
5 out of 5 Stars
Would Recommend
Highly recommend!I absolutely love my Coros Heart Rate Monitor! It is easy to setup and super easy to use. It's so helpful both during a workout and to look back on workouts to analyze my heart rate data. Highly, highly recommend.
[This review was collected as part of a promotion.]
5 out of 5 Stars
Would Recommend
Convenient and comfortable to useVery convenient to use, does't interfere, does't rub the skin, quickly connects to the watch. Sometimes I even forget to take it off after training, it’s so invisible. My recommendations.
[This review was collected as part of a promotion.]
5 out of 5 Stars
Would Recommend
Fabuloso (Fabulous)Funcional y estéticamente bello (Functional and aesthetically beautiful)
[This review was collected as part of a promotion.]
5 out of 5 Stars
Would Recommend
Game changerI’d been apprehensive about getting a HR monitor and never liked the chest ones. But as a runner who trains alone and does a lot of XT too this has literally improved my training so much through more accurate monitoring on my HR to ensure I am training in the right zones for that day’s target. Super comfy and don’t even realise it’s there!
[This review was collected as part of a promotion.]
4 out of 5 Stars
Would Recommend
Great Alternative to Chest StrapAfter tons of frustration with my Garmin HR chest strap, I thought I’d try something different. I have been using it with my Fenix 6 and have really been impressed with the results. It’s barely noticeable when it’s on and I feel like it is as accurate as I need it to be for an old, slow trail guy. No connectivity issues at all and it has a great battery life. My only issue (and I use issue lightly here) is the charging cable connection. It seems super touchy so I have to make sure it’s on there just right for it to charge otherwise the charging indicator light just shows that it’s constantly charging instead of complete. I can sync it with the app on my phone to see how full the battery is so it’s by no means the end of the world.
[This review was collected as part of a promotion.]
5 out of 5 Stars
Would Recommend
A Very Solid HR Monitor OptionSimple & easy to setup, and good tool to add to your training kit! Coros claims it's just as accurate as a chest strap, which I'm not sure is true as the arm band still uses optical sensors, but I've enjoyed training with it, especially on workout days.
[This review was collected as part of a promotion.]
5 out of 5 Stars
Would Recommend
Perfect for Zone trainingIf you do Zone training, this is a must. My Coros HR watch was never accurate then I bought this and problem solved. When I do Interval training it changes rate much faster and more accurate than the watch. I can actually run a 400 and have my HR reading jump up before I rest.
[This review was collected as part of a promotion.]
5 out of 5 Stars
Great additionFantastic addition to the COROS line up. Love this, works great!
[This review was collected as part of a promotion.]
5 out of 5 Stars
Would Recommend
works well and comfortableIf your looking to not wear a chest strap, and only need your HR, then this is an excellent device. Very comfortable, easy to use, and battery life seems robust. I pair it with a Garmin 255. I also own a Garmin chest strap, but find it chafes in the summer. This arm monitor is a great solution to that issue. Granted it pretty much gives you only HR, but that is enough for me, as the 255 captures most other metrics I am interested. I find the optical readings have too much variable for my liking.
[This review was collected as part of a promotion.]
5 out of 5 Stars
Would Recommend
Works great, syncs with non-Coros devicesComfortable and easy to use. It also syncs easily with non-Coros devices, such as a Garmin watch. Easy to clean and dries quickly after rinsing with water.
[This review was collected as part of a promotion.]
Back to Top
The official footwear and apparel Shop Now
Discover the best from New Balance Explore Now
Explore the line-up for your speed and race days. Explore Now
The newest model in the Vomero lineup. Shop Now
Discover the lightest ASICS racing shoe ever. Shop Now
The Perfect Gift Shop Now