COOSPO HW9 Bluetooth 5.0 ANT+ Heart Rate Monitor Armband with HR Zones/Calories Burned, Optical HRM Sensor for Fitness Training/Cycling/Running,Compatible with Peloton,DDP Yoga,Wahoo

±1BPM OPTICAL HEART RATE ARMBAND & CALORIE TRACKER: COOSPO HW9 heart rate armband uses optical heart rate technology to provide accurate heart rate and calorie burn data, achieve a monitoring error of ±1BPM.
HEART RATE ZONE MONITORING& HRV FUNCTION: HW9 has a 5-color LED indicator light for Heart Rate Zone Training, that shows your heart rate zone at a glance, so you can optimize your intensity levels at the right time. Also supports heart rate variability (HRV) function.
COMFORT TO WEAR: An Armband heart rate monitor is a great alternative to heart rate chest straps and wrist-based devices. Armband HRM sensor allows maximum freedom of movement and works in countless different sports.HW9 with a soft, breathable, and adjustable band for all training and exercise.