Specifications: Communication Mode: ANT+ / Bluetooth Smart Battery: Built-in Rechargeable Battery Working Time: 280hrsStrap Length: 65cm-95cm (25. 6-37. 4in)Sensor Size: 62*35*11mmWaterproof: IP68Weight: 55gApp Supports: Shiner Sport & Others IOS & Android Devices: IOS 7. 0 or later, Android 4. 3 or later Package List: 1 * Beat 20 Heart Rate Sensor1 * Adjustable Elastic Strap1 * User Manual (English)Notes: – Please make sure to moisture the electrodes of the belt and wear it on your chest first before connecting to other devices. – Detach the sensor from the strap after every use and dry the sensor with a soft towel. – Do not use cleaning chemicals. – Rinse the strap under running water after every use and hang to dry. – Please keep the ‘SHANREN’ logo facing out when using. Please keep it in the correct direction according to the ‘L’ and ‘R’ mark on the device.

Product Features

• 【Real-time Accuracy】 Record continuous and accurate heart rate/ cadence/ calorie burned and more for your fitness training. See workout data & analysis via Shanren Sport App. Keep your fitness training simple.
• 【Built-in Memorys】Automatic recording store up to 100 training sessions. No mobile phone interference to let you enjoy unbound training. Start recording as soon as put the heart rate monitor on
• 【Vibration Alert】Set your HR alarm value with Shanren Sport App. When HR reaches the peak, your front chest will feel it vibration. Help to find the right training intensity and prevent over-exercising.
• 【Rechargeable Design】Long-lasting battery gives 280 hours working time for a single charge. At same time reaches IP68 30m waterproof level and 55g light weight, makes you focus on and fully enjoy sports.
• 【Rechargeable Design】Long-lasting battery gives 280 hours working time for a single charge. At same time reaches IP68 30m waterproof level and 55g light weight, makes you focus on and fully enjoy sports.