iGPSport HR40 Heart Rate Monitor BikeType_Gravel these are highly durable and

these are highly durable and compatible with all performance housings and lubricants

3D-forged 6061

47-408  20x1

Down Swing construction

compact form that's ideal for road and gravel racing

iGPSport HR40 Heart Rate Monitor BikeType_Gravel these are highly durable andHR40 HEART RATE MONITOR HR40 has comfortable fabric strap, and slim, light and ergonomical design. Meanwhile, The battery life is about 1200 hours. HR40 supports the connection with iGPSPORT bike computers or smart phones to sync real time heart rate data with iGPSPORT cloud platform. It provides the functions of analyzing training data, checking training effect, managing training plan and maintaining a good training state. Battery Battery life :