COROS Heart Rate Monitor Review

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When it comes to training, having a reliable heart rate monitor can make a significant difference. I have been using GPS watches for the past nine years while running, and the GPS watch became a game-changer in my running routine. Recently, I tried out the new COROS Heart Rate Monitor, a sleek and comfortable alternative to traditional chest straps.

COROS Heart Rate Monitor Comfort and Fit:

The COROS Heart Rate Monitor excels in providing a comfortable fit, although it may have limitations for individuals with larger arms. It is simpler to wear than a chest strap, with a soft fabric band that lays flat around your arm and locks in place securely. The low-profile design prevents snagging on clothes or gym equipment, making it easy to forget you’re even wearing it.

For those with arm circumferences at or near the upper limit of its adjustable range, it’s worth noting that the band may max out the adjustment and may not provide as snug a fit as desired. The band is designed to fit arms with a circumference ranging from 7.09 to 12.6 inches (18 to 32 cm). If your arm size is at the upper end of this range, you may want to consider whether the fit will be adequate for your needs.

Despite this limitation, the durable elasticated band ensures a secure and stable fit during your workouts. The secure velcro enclosure allows for quick sensor removal, making it convenient for cleaning and maintenance.

Overall, the COROS Heart Rate Monitor offers a comfortable fit for most users, but those with larger arms should be mindful of the adjustable range to ensure an optimal fit during their fitness activities.

COROS Heart Rate Monitor Sensor Technology:

At the core of the COROS Heart Rate Monitor lies its cutting-edge sensor technology, representing the latest generation of multi-channel optical sensors. This advanced sensor system has been thoughtfully designed to deliver superior performance, providing users with quality and precise heart rate measurements.

With the sensor housed in a tough yet sleek body, the heart rate monitor demonstrates durability and resistance to daily wear. Additionally, the scratch-resistant cover protects the Heart Rate Monitor even during intense workouts or outdoor activities.

However, it’s worth noting that while the COROS Heart Rate Monitor’s sensor technology sounds impressive, I did not notice a significant difference between the heart rate data obtained from the arm band and that of my GPS watch. Both devices seemed to provide similar heart rate readings, indicating that the watch’s built-in heart rate monitor also performed admirably.

Nonetheless, the COROS Heart Rate Monitor remains a reliable companion for fitness enthusiasts, offering comfortable wear, secure fit, and precise heart rate monitoring for a wide range of activities. Whether you prefer tracking your progress, optimizing workouts, or simply monitoring your overall fitness, the heart rate monitor’s sensor technology ensures dependable data to support your fitness journey.

COROS Heart Rate Monitor Band Design:

The COROS Heart Rate Monitor band is ingeniously designed to securely cradle the heart rate sensor against the user’s arm, ensuring optimal contact for accurate and reliable data collection while preventing external light interference. Its soft fabric and low-profile construction enhance user comfort, allowing distraction-free workouts. However, potential buyers should pay attention to the band’s size, as even at 6ft tall and 185lb, I found myself near the upper limit of its adjustability.

COROS Heart Rate Monitor Battery Life and Charging:

With a remarkable battery life of 38 hours in full operation or 80 days in standby mode on a single charge, the COROS Heart Rate Monitor is built to endure. Charging is hassle-free with the included magnetic USB charging cable.

USB Charging Cord
Magnetic Connection
Charge Indicator Light

COROS Heart Rate Monitor Wear Detection and Multiple Connections:

The heart rate monitor powers on and off automatically based on wear detection, facilitating easy connections to paired devices for every workout. It can simultaneously pair with up to three devices, including non-COROS watches and other Bluetooth-compatible devices.

Personal Experience:

Having the opportunity to try out the COROS Heart Rate Monitor was an intriguing experience. The setup process was straightforward, and within a few minutes, I had the device securely fastened to my arm. The Velcro closure worked effectively, ensuring a snug fit that remained in place during both biking and running activities.

During my workouts, I paid close attention to the heart rate data provided by the COROS monitor. I compared it to the heart rate readings from my trusted Coros Vertix 2 GPS watch, and I was pleased to find that the data was consistent, which indicated the accuracy of the sensor.

However, I must admit that I am not someone who heavily relies on heart rate training in my fitness routine. While I appreciate having accurate heart rate data for my workouts, it’s not a metric that I use extensively for training purposes. For me, simplicity is key, and wearing just my GPS watch is more than sufficient for my fitness needs.


Size and Weight
Dimensions 42.5 x 28.4 x 9.1mm
Weight – Sensor Only 9.7g
Weight – Sensor + Band 19g
Band Material Polyester fiber, nylon, spandex
Optical Heart Rate Hardware 5 LED lights with 4 photodetectors
Arm Size 7.09-12.6 inches (18-32cm)
Wearing Position Bicep
Wireless Connection Bluetooth
Supported Devices Bluetooth-compatible devices that receive heart rate data Supports simultaneous connection of 3 devices
Data Sync Real-time heart rate data
Water Resistance 3 ATM
Working Temperature -4°F to 122°F (-20°C to 50°C)
Storage Temperature -4°F to 140°F (-20°C to 60°C)
Charging Temperature 32°F to 113°F (0°C to 45°C)
Activity Mode 38 hours
Standby Mode 80 days
Battery Capacity 55 mAh
Charging Time Less than 2 hours
Charging Cable USB Type-A Connects to the sensor using a magnetic interface


The COROS Heart Rate Monitor delivers on its promises, providing precise heart rate data and unmatched comfort during workouts. For those who value accurate heart rate monitoring to enhance their training and performance, this monitor is undoubtedly an excellent investment. However, if heart rate training is not a central focus of your fitness regimen, you may not find the additional equipment and maintenance necessary.

Nonetheless, it stands as an impressive piece of technology, combining innovation and functionality. It offers a compelling option for fitness enthusiasts seeking a reliable heart rate monitoring solution at an affordable price point of $79.00 from or

Nazar Kluchkovskiy: Nazar is an avid ultra trail runner who has been competing in challenging races since his teenage years. When he's not pushing himself to the limit on the trails, he enjoys spending quality time with his family in the great outdoors. Camping, mountain biking, hiking, and exploring new trails are some of his favorite activities. He finds being surrounded by the beauty of nature invigorating and is constantly on the lookout for new adventures and breathtaking landscapes to explore.
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