Specification: Item Type: Motorcycle Bluetooth Earphone Material: ABS Bluetooth Version: V5.0+EDR Frequency Range: 2.402GHz-2.480GHz Transmission Distance: Approx. 20-30m / 86-98ft (The transmission distance varies due to environmental factors and different mobile phone Bluetooth devices) MIC Distance: 1m Built In Polymer Lithium Battery: 1000mAh Charging Time: 1h Standby 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 About this item Bluetooth 5.0: Using the latest 5.0 Bluetooth technology, super signal transmission, ultra low power consumption. Automatic Answering: Support all Bluetooth devices, automatic answering function, no longer need to answer the phone manually. Hands Free: Listen to music wirelessly, let the music surround your life, hands free function anytime, anywhere. 1000mAh Lithium Battery: The wireless helmet headphone uses rechargeable lithium battery, long standby and working time. Y Shaped Design: Know when to charge with Y shape earphones, and easy to set the sound reminder of the device. Bluetooth 5.0: Using the latest 5.0 Bluetooth technology, super signal transmission, ultra low power consumption. Automatic Answering: Support all Bluetooth devices, automatic answering function, no longer need to answer the phone manually. Hands Free: Listen to music wirelessly, let the music surround your life, hands free function anytime, anywhere. 1000mAh Lithium Battery: The wireless helmet headphone uses rechargeable lithium battery, long standby and working time. Y Shaped Design: Know when to charge with Y shape earphones, and easy to set the sound reminder of the device.