Feature: 1. Using bluetooth 5.0 technology to support stable signal transmission,you can have a good experience. 2. Built‑in high‑quality anti‑interference microphone,it can keep high sound fidelity. 3. Hands‑free answering and hanging up calls,automatic call callback and other functions can effectively realize. 4. Ultra low energy consumption and has long standby time,it supports mobile phone and other devices. 5. When listening to a song, you can control the upper and lower songs, the volume increase and decrease, and the playback pause. 6. Simple operation and easy to use,equipped with fixing clips, also suitable for half helmets and other types of helmets. Specification: Item Type: Motorcycle Bluetooth Helmet Headset Material: ABS Model: M6 Sound Channel: Stereo Sound How To Use: Head-Mounted Bluetooth Name: Bluetooth Headset Bluetooth Version: V5.0 Bluetooth Protocol: A2DP, L2CAP, HFP, AVRCP, AVDTP, AVCTP Frequency Range: 2.4026GHz-2.480GHz Charging Time: ≤1hour Listening Time: 7-10hours Standby Time: ≤360hours Continuous Working Time: ≤15hours Range: Approx. 10m/32.8ft(Up To Approx. 30m/98.4ft Without Barriers) The Transmission Distance Of The Microphone: ≤Approx. 1m/3.2ft Single Headset Power: 0.5W Battery Capacity: Lithium Battery 250mAh (Shipped With Built-In Battery) Charging Voltage: 5V Function: Support Music, Call Back, Call Function Chinese and English Switching, Automatic Answering . Package List: 1 x Headset4 x Hook&Loop1 x Charging Cable1 x Instruction Book4 x Long Screw4 x Short Screw8 x Screw Nut1 x Set of Fixing Clips (6 Accessories)