Feature:1. Accurate heart rate monitoring helps you to achieve the best exercise state.2. Supports multi sport modes, compatible with both BT and ANT+, all data can be transmitted to mobile training Apps \u0026 bike computer.3. Large capacity and low power consumption battery support 300 hours normal use.4. Breathable rubber strap with adjustable elastic band, easy and comfortable to wear.5. IP67 waterproof allows you to enjoy running even in the rain.6. Great choice for rowing, Cycle, climbing, Yoga, running, training indoors or outdoors.Specification:It is a good choice for those who love sports and pursue a healthier life.Feature:Accurate heart rate monitoring helps you to achieve the best exercise state.Supports multi sport modes, compatible with both BT and ANT+, all data can be transmitted to mobile training Apps & bike computer.Large capacity and low power consumption battery support 300 hours normal use.Breathable rubber strap with adjustable elastic band, easy and comfortable to wear.IP67 waterproof allows you to enjoy running even in the rain. Great choice for rowing, Cycle, climbing, Yoga, running, training indoors or outdoors.Specification:Material: ABS + Nylon + SpandexColor: BlackBT version: BT 4.0Waterproof: IP67Strap length: 60 - 95 cm / 23.6 -37.4 inSensor Size: 13.5 * 59 * 35 mm / 0.53 * 2.3 * 1.4 inSensor Weight: 15 g / 0.5 ozPackage size: 13.6 * 10.4 * 3.8 cm / 5.4 * 4.1 * 1.5 inPackage weight: 104 g / 3.7 ozPackage List:1 * Heart Rate Sensor1 * Chest Strap1 * User ManualPackage List:1 * Heart Rate Sensor1 * Chest Strap1 * User Manual