Feature: 1. [Easy To Use] 4 people talk to each other at the same time, no need to press any key, automatic real time call, free your hands, make your driving safer. 2. [Automatic Answering] This helmet headset can answer the phone automatically, when there is a call from the walkie talkie, it will automatically answer. 3. [FM Radio] Support domestic radio function, 88Hz to 108Hz frequency, can also wirelessly listen to mobile phone MP3 music, the sound quality is clear. 4. [BT Pairing] BT 3.0 chip, after the first pairing, it will automatically connect to the intercom another time it is turned on, which is very convenient. 5. [Compatible] This wireless motorcycle intercom headset is compatible with GPS, MP3, tablet and other devices, and can use music, GPS voice navigation function. How to Use: BT pairing: 1. Press and hold the motorcycle button to turn it on. 2. The mobile phone searches for BT pairing successfully, other see the manual. Specification: Item Type: Helmet Headset Material: ABS BT Protocol: V3.0 + EDR Intercom Distance: Up to 1000m/3280.8ft BT Connection Distance: Approx. 10m/32.8ft Waterproof Grade: IP65 Standby Time: 450h Charging Time: 2.5h Built in Polymer Lithium Battery: 850mAh Package List: 1 x Host 1 x Helmet Headset 1 x Manual 1 x USB Cable 1 x Screw Clip 1 x Hook and Loop Clip 4 x Hook and Loop 2 x Screw 1 x Wrench