LEXIN 4x Waterproof Bluetooth Intercom System for Motorcycles/Motorbikes - Connect Up to 6 Riders At Max 1000 M Distance - 2-Way Radio Helmet Headset - Connects to Bluetooth Mobile Phones Thank you for choosing the LX-R6, Motorcycle 6 Rider Large Group 1000M full-duplex stereo Bluetooth wireless helmet headsets, designed for installation into most open-face, flip-front and full-face style helmets. With the LX-R6, you can call hands-free on your Bluetooth mobile phone, listen to stereo music or voice instructions of GPS navigations by Bluetooth wirelessly, and have intercom conversations in full duplex with a passenger or multi-pair up to 6 Riders in a large group and talk between any 2 of them in a range of 1000M (3,280 feet) distance. The LX-R6 is compliant with the Bluetooth Specification v2.1 supporting the following profiles: Headset Profile, Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP). Please check with the manufacturers of other devices to determine their compatibility with this headset. Superior audio fidelity has been achieved with our wide-fidelity, non-ported and ultra-slim helmet speakers. This headset also provides the industry's best combination of wind and ambient noise reduction with the miniature boom microphone. Main unit is powered by a rechargeable Lithium Ion/Polymer power cell providing 8-12 hours of use from a full charge.