V4i-1200 1200m Bluetooth Interphone Headsets for Motorcycle Helmet, Max Support: Four Riders by Bluetooth System

V4i-1200 1200m Bluetooth Interphone Headsets for Motorcycle Helmet, Max Support: Four Riders by Bluetooth System

1) The Bluetooth system that allows the max. call distance between two riders up to 1,200m and actually realizes the altogether duplex wireless communication surrounded by four riders 2) cotton speed above 120km/h 3) automatic and harmless receiving of mobile phone calls 4) professional of control Bluetooth CSR BC5 scheme available 5) advanced A2DP & EDR Bluetooth function available 6) robust stereo music/audio available (mobile phone/MP3/GPS including A2DP for transmission) 7) DSP noise decrease function 8) Inbuilt polymer lithium battery including capacity up to 500mA 9) Standby 240h 10) Continuous call or music playing above 8h 12) Charging time around 3h

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sort of Packing: colour Box