Comfortable and adjustable elastic strap With the chest strap based on high quality material, it can be attached to your skin closely Soft fabrics and adaptive electrodes make it extremely sensitive to your heart's electrical signals Utilizes the snap attachment method Compatible with different heart rate sensors (ANT+, Bluetooth 4.0, 5.3K) Suitable for Polar, Wahoo, Garmin, etc products Suitable for Geonaute Polar H3 H7 M400 v800 Wearlink M32 etc, Wahoo Tickr Garmin 520, Magene move, Bryton, Coospo, Bryton 530, Garmin HR, Garmin ant+ sensor, Wahoo TICKR or TICKRx, Garmin forerunner 610, Coospo h6, Bryiton 330, Polar H3, garmin HRM-Run, etc Total Length: Approx. 100cm before elastic (elastic and adjustable to fit different body size) Two snaps Distance: Approx. 45mm (please check the distance of your transmitter and confirm the compatibility) Colour:Blue/Black/Orange/Red Material:plastic Package Contents: 1 x Adjustable Elastic 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.