2pc 1000M 4 People Group Talking Helmet Intercom US Plug With bluetooth No Need Change Channels

Advantage: No need to change channels, 4 people can talk in the same time, one to two,three or four talking in 1000m. Better than other intercom which need to change the channels in most people that are two to two talking. Fitment: Conference Group discussion Outdoor AC Please clink the link to look through the instruction: http://imgmgr.banggood.com/images/upload/2015/08/V4 SKU262119 Instruction.pdf Description: 1.bluetooth 3.0 2.Working speed above 120km/h; 3.Automatic and safe receiving of mobile phone calls; 4.Master control bluetooth CSR BC5 scheme available; 5.Advanced A2DP & EDR bluetooth function available; 6.Strong stereo music/audio available (mobile phone/MP3/GPS with A2DP for transmission); 7.With FM 8.DSP noise reduction function 9.Inbuilt polymer lithium battery with capacity up to 500mA; 10.Standby 240h; 11.Continuous call or music playing above 8h; 12.Charging time around 3h; 13.National Level 5 waterproof standard; Instructions: Motorcycle bluetooth interphone V4-1200 is designed for helmets. This is bluetooth stereo headset, widely used for motorcycle helmets, bike users. Full duplex calls allow you to talk with other partners simultaneously The easy to access and intuitive button operations make Motorcycle Buetooth headset a perfect companion for motorcycle riders and keep riders safe when riding. Key Features: The bluetooth system that allows the max call distance between two riders up to 1,000m and actually realizes the fully duplex wireless communication among four riders. Specification: bluetooth Version: 3.0 Chip: CSR BC5 Battery capacity: 550 Battery Type: Polymer Charge and discharge times: 500 Operating voltage: 3.3V-4.2V Talk time: 8H Standby time: 150H Charging time: 2.5H Radio frequency: FM87.5 ~ 108MHz RDS: No Speaker power: 0.25W Waterproof: Have TTS: None Have automatic volume adjustment: no Operating temperature range: -10 to + 45 (minimum and maximum operating temperature) Charger Specifications: DC 5V 500mA Package Included: 2 X intercom 2 X headset 2 X power charger (US and EU power can be optional) 2 X charging cable 2 X user manual 2 X helmet clip 2 X simple screwdriver