Cellularline Interphone Start 1-Pack Bluetooth Intercom SetEnhance your movements around the city with the Interphone Start, which includes a dual stereo headset for a more crisp sound, Bluetooth® connection to smartphones, and GPS navigation for added security, with an incredibly slim and elegant design. The Interphone Start offers compact dimensions and unprecedented functions. This particular design makes it easy to use, while ensuring maximum water resistance, even in adverse weather conditions. Simplified installation is made possible with the help of adhesive for fastening to helmets, boom microphone, and no wires between the control unit, microphone, and headsets. It is equipped to receive software updates that ensure maximum compatibility with other devices and a long, operational life.General Features• Talk time: up to 4 hours• Standby: 12 hours• Charging time: 2 hoursIntercom Mode• Rider-to-passengerIntercom Range• Up to 32 feetMobile Phone• Voice call (depending on mobile phone model)• Last number redialGPS• Compatible with most major Bluetooth® navigation devices for motorcycles• GPS voice instructions• Compatible with most major smartphone navigation appsMP3/Music• Wireless MP3 music (A2DP/AVRCP) through Smartphone and MP3 playerFirmware Update• Firmware update-ready directly from PC (Windows)Waterproofing• Water resistantAudio• Directional wind-proof microphone• Noise Dependant Volume ControlChipset/Battery/Charger• Bluetooth® version 3.0• USB connector charging cable (MICRO USB)• Micro USB connector for charging and dataPack Contents• 1 Bluetooth® unit- 1 boom microphone- 2 1.5” diameter stereo speakers(0.30” thickness)- 1 slim controller pad• 1 adhesive Velcro for controller pad• 2 adhesive Velcro for earphones• 1 micro USB charging cableDimensions• Weight: 0.10 lbs / 46 grams• Length: 1.8 inches• Height: 1.03 inches• Depth: 0.39 inches