The COROS Heart Rate Monitor is a sleek, comfortable optical arm band designed for reliable heart rate tracking with strong Bluetooth compatibility. It’s especially appealing if you find wrist sensors uncomfortable or want better zone tracking without a chest strap. Battery life is solid and the device is easy to use—just be mindful of post-workout wear since it powers on automatically.

DESIGNED FOR ACCURACY
Our latest generation optical heart rate sensor provides you with a new level of 
accuracy, comparable to that of a chest strap. For cycling, running, climbing, 
HIIT workouts, and more, the COROS Heart Rate Monitor will help you overcome 
the limitations of wrist-based heart rate, guaranteeing accurate data during any 
activity for over 38 hours.

LASTING COMFORT
While chest monitors may provide accuracy, they typically are uncomfortable 
to wear. The soft fabric band of the COROS Heart Rate Monitoe securely and
comfortably wraps around the arm, with a low-profile design that prevents 
snagging. The adjustable buckle allows for a perfect fit, and the strong Velcro 
enclosure enables easy removal for washing.

WHY THE ARM?
Placing a heart rate sensor on the arm ensures optimal blood flow beneath the 
sensor, giving you confidence in the data you’re seeing. While wrist-based heart 
rate sensors are convenient, they typically have limitations that make accuracy a 
challenge, no matter the brand or product.

NO BUTTONS. NO FUSS.
The COROS Heart Rate monitor features automatic wear detection, powering 
on and off based on when it’s worn. It connects to multiple Bluetooth devices 
simultaneously, including non-COROS watches and other Bluetooth-compatible 
devices such as Indoor Trainers, Bike Computers, and more.

FEATURES:
- Temperature Ratings (Working Temperature): -20°C ~ 50°C (-4°F ~ 122°F)

PRODUCT SPECIFICATION:
- 42.5mm x 28.4mm x 9.9mm
- Weight 19g
- Optical Heart Rate Hardware: 5 LED lights with 4 photodetectors
- Armband Materia: Polyester fiber, nylon, spande
- Band Circumference: 7.09 - 12.6 inches
- 3 ATM water resistant
- 2 years international warranty

BATTERY LIFE:
- Battery capacity: 55mAh
- Recording Activities: 38H
- Standby: 80 days
- Charging: Standard magnetic USB charging cable
- Estimated charging time: 2 hours

IN THE BOX:
- Coros Heart Rate Monitor × 1
- Charging Cable × 1
- User Guide Safety Information & Warranty Card × 1

COHRMGRY