v4-1200 bluetooth intercom bluetooth full-duplex motorcycle helmet V4-1200 1200M wireless bluetooth motorcycle helmet walkie talkie with full duplex communication for 4 riders at the same time. General feature 1.Full duplex motorcycle v4-1200 bluetooth intercom 2.Up to 1200m bluetooth distance, 3.Working speed above 120KM/H; 4.Automatic and safe receiving of mobile phone calls after 3s without pressing any key 5.Lithium battery with capacity up to 500mA; 6.National Level 5 waterproof standard; 7.Super shock stereo headphones 8.Fully duplex wireless communication among four riders,four riders can talk and listen at the same time,help your communication without chock. 9.V4 has the functions of EDR and A2DP and one of its important features is that it may be connected with the mobile phone with A2DP stereo function, MP3 or GPS audio navigator so as to listen to music Brief Description 1 Patent product from Vnetphone; 2 The world fist one real 4-person motorcylcle helmet v4-1200 bluetooth intercom ; 3 Factory direct sales; 4 4 riders full duplex wireless communication motorcycle helmet v4-1200 bluetooth intercom ; 5 4-Way motorcycle helmet walkie talkie conferencing; 6 Easy to install; 7 Advanced A2DP & EDR Bluetooth function available; 8 The most ‘sociable’ pair of Bluetooth communication systems for motorcycle riders; 9 Suitable for riders, miners, workers, skiiers etc Packaging & Delivery Packaging Detail: gift box/OEM Delivery Detail: 1-3days Warranty and Return 17th Year Gold Supplier ,with high quatity 1 All product and accessories have been tested by 3 times before ship out. 2 All products have 1 year warranty,if there is no man-maded problem, we will replace repair for your freely. 3 We own the best after-sale service.If any problems happen, our team will do our best to solve for customers.