Features:1. Utilizes the latest CSR4.0+EDR Bluetooth technology, super strong signal transmission, ultra-low power consumption, and expenditure of all Bluetooth devices;2. support for automatic answer function, can switch to manually answer the phone function, safe and fast, built-in anti-interference microphone, can effectively realize the hands-free answer, hang up the phone;3. high sound fidelity, the function can be operated up and down song, volume up and down, play pause, automatic callback, and other functions, simple operation.Specification:Connection Name: BTBluetooth Version: V4.2+CSR (update, slightly different from the manual)Transmission Distance: 10M (transmission distance varies due to environmental factors and mobile phone Bluetooth devices)Bluetooth Pairing Distance: 20-30 Meters (depending on the device)Standby: 120 hoursPlay Time: 15 hoursCharging Time: Lithium Battery: 3.7V/500mAMIC Distance: 1 meterFrequency: 2402 Ghz-2480 Ghz.MIC Distance: 1 MeterFeature 1: Helmet Headset BluetoothFeature 2: Helmet Headset Motorcycle BluetoothFeature 3: Helmet Headset MotorcycleFeature 4: Motorcycle Headset HelmetFeature 5: Motorcycle Headset BluetoothFeature 6: Motor Headset BluetoothFeature 7: Helmet Motor HeadsetFeature 8: Helmet Motor Bluetooth HeadsetFeature 9: Headset for HelmetFeature 10: Headset Motorcycle HelmetPackage Includes:1* Motorcycle Helmet Headset1* Cable1* Manual1* mic cover2* static stickers