*Main Features: - Full-duplex motorcycle helmet Bluetooth intercom for 5 riders simultaneously - Maximum 1200 meters calling distance - High operating speed of 120km / h ensures fluent conversation - Automatically receiving calls, suitable for motorcyclists and skiers - It can be connected to MP3, GPS, or cellphone and has FM radio function - DPS echo reduction and noise resistance guarantee clear sound quality *Description: - Bluetooth: V3.0 - Battery: 500mAh inbuilt polymer lithium battery - Standby: 240h - Talking time: Over 8 hours - Charging time: 3h 0.428 *Product: - Product Size(L x W x H): 9.50 x 4.50 x 1.70 cm / 3.74 x 1.77 x 0.67 inches - Package Size(L x W x H): 20.50 x 15.00 x 5.50 cm / 8.07 x 5.91 x 2.17 inches *Package Contents: - 1 x V5 Bluetooth Interphone, ( US PLUG/EU PLUG) - 1 x Headset Microphone, - 1 x USB Cable, - 1 x Clamp, - 2 x Screw, - 1 x Screw Driver, - 2 x Clip Spacer, - 1 x Conversion Adapter, - 1 x Multilingual User Manual