Features:

TRACK EVERY BEAT OF YOUR HEART:COOSPO H9Z Chest Strap Heart Rate Monitor uses an advanced sensor chip and the latest algorithm for accurate monitoring.With an average heart rate accuracy of 1bpm, the H9Z HRM is the best way to track your real-time heart rate and calorie burn data.

HEART RATE ZONE&HRV:H9Z HRM has a 5-color led light for indicating Heart Rate Zone.The lights will change colour according to heart rate zone, helping to keep you in the right zone for your training goals and to achieve the best results. Also support heart rate variability (HRV) function.

BLUETOOTH5.0 & ANT+ DUAL MODE:With ANT+ connectivity and BLUETOOTH5.0 Low Energy technology, H9Z Hear Rate Sensor ensure you can connect to Smartphone/GPS Bike Computer/Gym Equipment/Sports Watch,and sync heart rate date to your favorite fitness equipment and sports apps.

NO NEED TO CHANGE BATTERYBuilt-in rechargeable Li-Ion battery,provides up to 50 hours of battery life with single charge.To extend battery life, please use a DC 5V power adapter or computer USB port for charging.

MORE COMFORTABLE:14% lighter and 13% less thin than the previous version and H9Z Heart Rate Chest Strap is made of fabric, more comfortable to wear, and does not slip when training, a fully adjustable chest strap can be adjusted from 25 to 36 inch.