• COMFORTABLE WEAR - COOSPO H808S chest strap comes with soft adjustable chest strap, adjustable from 65 to 95 cm. And extra replacement straps for different size and color see ASIN B0895Q2ST7.
  • Usage Tips - 1: Please moisten the plastic electrode zones of the chest strap before use. 2. Please connect the heart rate sensor in the App instead of phone bluetooth. Bluetooth name is always H808S-****** 3: After finishing the exercise, disconnect the sensor and chest strap. 4. Please check the working time of both the battery and the chest strap. It is recommended to replace the strap once every 6 months or 300 times after washing.
  • IP67 & 300H Battery Life - Can work with IP67 on rainy days, but not recommended for swimming. With the CR2032 replaceable battery, it can be used continuously for 300 hours.