Ditch the chest-strap drama and upgrade to the COOSPO HW9 Armband Heart Rate Monitor - a comfortable, accurate optical HR solution for every workout. The HW9's 3rd-generation optical algorithm tracks 30-240 bpm with 1 bpm accuracy, while dual Bluetooth 5.0 + ANT+ lets you connect to two Bluetooth devices at once (e.g., phone + watch) and ANT+ gear (bike computers, treadmills) simultaneously.

Dial in your training with HRV support, multi-color LED HR zone lights, and vibration alerts when you hit max HR. The nylon armband fits 20-39 cm on the forearm or bicep and weighs just 10.6 g - you'll forget it's there. With IP67 protection and up to 20 hours of battery life, it's built for serious sessions and daily use.

Compatible with Strava, Zwift, Wahoo, Garmin, Peloton, DDP Yoga, Polar Beat, and more via COOSPORIDE / HEARTOOL apps.

Features:
- Model: COOSPO HW9 (Armband HR Monitor)
- Sensor: 3rd-generation optical heart rate algorithm
- HR Range / Accuracy: 30-240 bpm, 1 bpm
- Connectivity: Bluetooth 5.0 (two simultaneous) + ANT+
- Compatibility: Strava, Zwift, Wahoo, Garmin, Peloton, DDP Yoga, Polar Beat; GPS watches, bike computers, smartphones
- Battery: Lithium Polymer; up to 20 hours; ~1.5 h magnetic charge (USB)
- Charging: Magnetic clip / USB
- Water/Sweat Rating: IP67
- Strap: Adjustable nylon, 20-39 cm (forearm/bicep), black
- Indicators: Multi-colour LED HR zone lights
- Alerts: Vibration alert (max HR)
- HRV: Supported (via app)
- On-device Memory: Stored in app
- OTA Firmware: Via COOSPORIDE / HEARTOOL app
- Weight: 10.6 g
- Device Size: 4.06 × 3.302 × 1.016 cm

Q: Does it connect to Garmin/Wahoo/Zwift/Strava?
A: Yes - Bluetooth 5.0 (two devices at once) and ANT+ work with Garmin, Wahoo, Zwift, Strava, Peloton and more.

Q: Can I pair two devices at the same time?
A: Yes - 2 simultaneous Bluetooth connections, plus ANT+ for compatible devices.

Q: Is it more comfortable than a chest strap?
A: 100%. The nylon armband sits on your forearm/bicep (20-39 cm) for a secure, chafe-free fit.

Q: Battery life & charging?
A: Up to 20 hours per charge; about 1.5 hours to full with the magnetic USB cable.

Q: Is it waterproof?
A: IP67 rated - sweat and rain ready.

Q: Does it support HRV and alerts?
A: Yes - HRV in the app, LED HR zone lights, and vibration alert for max HR (configurable in COOSPORIDE / HEARTOOL).

What's in the box
1 x COOSPO HW9 Heart Rate Monitor
1 x Elastic Nylon Armband
1 x Magnetic USB charging cable
1 x User manual