Excelvan BT Motorcycle Motorbike Skiing Helmet Bluetooth Headset Wireless Intercom Interphone 500M/0.3MI WARRANTY: 1 year with 100% satisfaction and zero hassle returns guaranteed. RANGE: Full duplex interphone wireless headset that for Bluetooth enable cell phone at a range of up to 10m/33ft. Bike-to-bike intercom for rider, passenger or two separate bikes up to 500m/0.3mi. 3 RIDERS: Wireless communication between three riders by Bluetooth system. Receive the audio navigation message from your Bluetooth enabled GPS. WIRELESS: Bluetooth music receiver and speaker, enjoy streaming music from cell phone or other device through A2DP. APPLICATION: For motorcycle rider and passenger who wish to have clear and reliable wireless communications while riding. Compatible with Bluetooth cell phones, GPS, mp3 and can be suited to any sort of helmet for motorcyclists.