Armband Heart Rate Monitor – Bluetooth 5.0, ANT+ & HR Zones

Keep heart-rate feedback within easy reach during a ride, run or gym workout with the COOSPO HW9 optical armband monitor. It measures heart rate from your arm and sends the data wirelessly to compatible training equipment or apps. The adjustable strap offers an alternative to wearing a chest strap, with a small sensor module that leaves your hands free.

A colour LED on the front shows your current heart-rate zone. Five colours distinguish very light, light, moderate, hard and maximum effort, giving you a quick visual reference during a session. This can help you see when your effort changes between a warm-up, a sustained interval and recovery without repeatedly opening a detailed app screen. Calorie estimates are also available within the supported training data.

Bluetooth 5.0 and ANT+ provide two connection methods for compatible phones, GPS watches, bike computers and fitness equipment. The monitor supports two simultaneous Bluetooth connections, useful when you want to send heart-rate data to more than one compatible receiver. Supported setups include Peloton, Zwift and Wahoo equipment or software that accepts an external heart-rate sensor.

CoospoRide and Heartool app support adds a way to view workout information on your phone. In CoospoRide, you can configure the LED and vibration functions, including a heart-rate alert value. The app view provides a fuller picture of a session alongside the colour indicator on the sensor itself.

The sensor module weighs approximately 10.6g and measures 1.6 × 1.3 × 0.4 inches. Thread the strap through its retaining slots, loop it around your arm and adjust the fastening for secure skin contact. Two straps are included, giving you different fitting options, together with a manual and USB contact charging cable.

A rechargeable battery provides up to 35 hours of use between charges, depending on use. Charging uses the contact cable with a 5V USB supply or computer USB port. The sensor has an IP67 rating for workout exposure to moisture, but it is not intended for swimming. Its light armband format suits regular indoor cycling, outdoor rides and fitness sessions where you want connected heart-rate data and a visible effort indicator.