Feature:1. Bluetooth 5.0: Using the latest 5.0 Bluetooth technology, super signal transmission, ultra low power consumption.2. Automatic Answering: Support all Bluetooth devices, automatic answering function, no longer need to answer the phone manually.3. Hands Free: Listen to music wirelessly, let the music surround your life, hands free function anytime, anywhere.4. 1000mAh Lithium Battery: The wireless helmet headphone uses rechargeable lithium battery, long standby and working time.5. Y Shaped Design: Know when to charge with Y shape earphones, and easy to set the sound reminder of the device.Specification:Item Type: Motorcycle Bluetooth EarphoneMaterial: ABSBluetooth Version: V5.0+EDRFrequency Range: 2.402GHz-2.480GHzTransmission Distance: Approx. 20-30m / 86-98ft (The transmission distance varies due to environmental factors and different mobile phone Bluetooth devices)MIC Distance: ≤1mBuilt In Polymer Lithium Battery: 1000mAhCharging Time: ≤1hStandby Time: ≤24h.Package List:1 x Intercom Headset1 x Sponge Cover1 x Charging Cable4 x Hook & Loop2 x Screw2 x Nut1 x Fixed Hole Frame1 x Manual