Description 1 It can realize direct full duplex intercom between bluetooth helmet earphone and bluetooth helmet earphone up to 800 1000 meters 2 Can answer the phone refuse the phone and hang up the phone 3 Automatically answer the phone function 4 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 bluetooth mobile phone intercom call stereo music and FM radio 9 There is DSP noise cancellation and wind sound processing to ensure clear call quality when running at high speed 10 The button panel waterproof sunscreen design is durable 11 Support last code redial 12 Wired connection to MP3 GPS mobile phone walkie talkie etc via audio cable Specification Intercom Distance 800 1000 metersMobile Phone Connection Distance 50 metersBattery Capacity 450mAhWorking Hours 15 hoursUsing Time 6 8h Songs Mode Talk Time 8 10h Intercom Mode Charging Time 2 hoursStandby Time 240 300 hoursChip CSR Chip Note 1 Only two Intercom of the same model can be used for intercom 2 Please allow 1 2cm errors due to manual measurement 3 Due to the difference between different monitors the pictures may not reflect the actual color of the item Package Included 1 X Motorcycle Wireless Interphone1 X Microphone and Ear Speaker1 X Headset Clip With Screw1 X Sticker1 X Hex Key1 X User Manua