Heart Rate and Calorie Monitor

✅ OPTICAL HEART RATE SENSOR ±1BPM AND CALORIE TRACKER: The COOSPO HW9 heart rate armband uses optical heart rate technology to provide accurate heart rate and calorie burn data, with a monitoring error of ±1BPM.

✅ HEART RATE ZONE MONITORING AND HRV FUNCTION: The HW9 features a 5-color LED indicator light for heart rate zone training, which quickly shows your heart rate zone so you can optimize your intensity levels at the right time. It also supports the heart rate variability (HRV) function.

✅ COMFORTABLE TO WEAR: The heart rate monitor with armband is a great alternative to chest straps and wrist-based devices. The HRM armband sensor allows maximum freedom of movement and works in numerous sports. The HW9 comes with a soft, breathable, and adjustable strap for all workouts and exercises.

✅ CONNECTIVITY: Bluetooth 5.0 and ANT+ ensure you can connect the COOSPO HW9 heart rate sensor to GPS bike computers, apps, fitness devices, and running watches. It supports two simultaneous Bluetooth connections with the latest technology.

✅ CUSTOMIZABLE MAXIMUM HEART RATE: The Heartool/Coosporide app allows you to customize your maximum heart rate value with the HW9, so you can hit your true heart rate zone and optimize your intensity levels at the right time (default max heart rate is 200bpm).

✅ MAXIMUM HEART RATE VIBRATION ALERT: When your heart rate exceeds the maximum heart rate value or your customized value, the HW9 armband vibrates, alerting you to protect your safety during training.

✅ RECHARGEABLE BATTERY: Provides up to 35 hours of battery life with fast charging and a magnetic charger. To extend the battery life, use a DC 5V power adapter or a USB port on your computer to charge.

✅ RECOMMENDED APP: The COOSPO Bluetooth 5.0 heart rate armband is compatible with over 200 apps like Wahoo Fitness, Strava, Polar Beat, DDP Yoga, HR Monitor, CooSporide, Elite HRV, and Zwift.