Specification: Item Type: Bluetooth Helmet Headset Material: ABS Bluetooth Chip: EDR BT CSR 8635 Built In Lithium Battery Capacity: 1100mah (Inclusive) Frequency: 2.4GHz Working Hours: 60 Hours BlBluetooth Configuration File: A2DP and AVRCP Charging Voltage/Current: DC5V/190mA Amplifier: HT4832SQ Distance:10m/32.8ft Package List:1 x Clamp 1 x Bluetooth Helmet Headset1 x Charging Line1 x Description 1 x Microphone 8 x Hook and Loop Fasteners Clear Sound Quality: Bluetooth helmet headset has HiFi high resolution sound quality, csr chip, 40mm speaker, bass hd sound quality. 3.5mm audio interface, more stable transmission line, sound quality more fidelity. Easy to Operate: Our motorcycle helmet headphonecommunication system don't need complex operation and won't let your hands go off the handlebar during the drive. Instead, one key operation. Larfe Battery Life: Fast charging and long battery life. Bluetooth headset intercom has1100mah standard large capacity battery, full of continuous normal operation for 100 hours. Removable, convenient and quick charging. Remote Control: Remotely control the connected Bluetooth mobile phone to make calls, answer calls, reject calls and hang up calls. Remote control mobile phone music forward, backward, play, pause functions. Stable Performance: Helmet headset support hot swappable. Clamping stability does not hurt the helmet. Spring steel clip, easy to install, no screw. Compatible with all kinds of helmets and common market earphones. Clear Sound Quality: Bluetooth helmet headset has HiFi high resolution sound quality, csr chip, 40mm speaker, bass hd sound quality. 3.5mm audio interface, more stable transmission line, sound quality more fidelity. Easy to Operate: Our motorcycle helmet headphonecommunication system don't need complex operation and won't let your hands go off the handlebar during the drive. Instead, one key operation. Larfe Battery Life: Fast charging and long battery life. Bluetooth headset intercom has1100mah standard large capacity battery, full of continuous normal operation for 100 hours. Removable, convenient and quick charging. Remote Control: Remotely control the connected Bluetooth mobile phone to make calls, answer calls, reject calls and hang up calls. Remote control mobile phone music forward, backward, play, pause functions. Stable Performance: Helmet headset support hot swappable. Clamping stability does not hurt the helmet. Spring steel clip, easy to install, no screw. Compatible with all kinds of helmets and common market earphones.