QTBE6 450mAh Wireless Bluetooth Helmet Interphone Earpiece Walkie Talkie Headset Orange Features: 1. Realize direct full-duplex intercom between helmet earphones for Bluetooth up to 800-1000 meters. 2. Support answer the phone, reject the phone and hang up the phone. 3. Automatically answer the phone function. 4. With FM radio function. 5. Support voice switching. 6. Enjoy music from your mobile phone or connect to GPS via A2DP. 7. You can control the previous song, next song, play, pause of mobile music through AVRCP. 8. It can realize automatic switching between mobile phone for Bluetooth, intercom call, stereo music and FM radio. 9. With DSP noise cancellation and wind sound processing, it ensures clear call quality when running at high speed. 10. The button panel waterproof sunscreen design is durable. 11. Support last code redial. 12. Connected to MP3, GPS, mobile phone, walkie-talkie, etc. via audio cable. Specifications: for Bluetooth solution: CSR Support A2DP and AVRCP Frequency: 2.4GHZ Amplifier: MAX97220A Battery capacity: 450mAh Charging voltage: 5v Charging current: 160ma Mobile phone connection distance: 50 meters Intercom distance: 800-1000 meters for Bluetooth pairing name: Intercom Size: Approx. 8.5*5*2*cm/3.35*1.97*0.79 Color: Orange Package List: 1 * Headset 1 * English User Manual 1 * Microphone 1 * Earphone Bracket 2 * Hook and Loop 1 * Screw Drive 2 * Screws 1 * Charging Cable