Its universal design ensures it can be used with most market-leading , enhancing its practicality for all your fitness needs. ENHANCED COMFORT AND PRECISION: Made of , waterproof and sweat-proof material, this chest strap fits snugly around your body. It ensures fast heart rate detection and stable connection for accurate data, contributing to effective exercise and health monitoring. Its wide range of adjustability ensures a , making it ideal for anyone whose body shape may change over time. User-friendly design: To use, simply adjust the strap to your size, make sure the electrode area is in contact with your skin, and check that the connector is properly aligned Colour:black Material:ABS Package Contents: 1 * Heart rate chest strap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.