Polar OH1+ Optical Heart Rate Sensor with black armband.

The ease of heart rate tracking without the chest strap.

Compatible with all Polar Bluetooth wrist units and cycling computers.

Built-in memory can store up to 200 hours.

This heart rate monitor armband accurately and consistently captures heart rate using Polar’s proprietary heart rate algorithm and 6-LED solution.

Use Polar OH1 to broadcast your live heart rate to any Bluetooth-compatible Polar product, many third-party fitness apps and Bluetooth-compatible gym equipment.

Polar OH1 boasts a long battery life with up to 12 hours of training time on a single charge. Easily charge the battery with the included Polar OH1 USB adapter. 

Polar OH1 is waterproof up to 30 m.