H10 Heart Rate Sensor Black Medium To Double Extra Large

Built-In Memory: Store 1 heart rate training session.

Perfect for sports and activities where a wrist unit would be difficult to use.

Updateable Firmware

Firmware updates that enhance the functionality.

Operating temperature -10 °C to +50 °C/14 °F to 122 °F.

Enhanced Battery Life: 400 hours of operation time on a user replaceable.

Fits chests measuring 22 to 34 inches.