Warranty: All Excelvan intercoms have 1 year warranty 100% satisfaction and zero hassle returns guaranteed.</br>Distance: Wireless Bluetooth intercom between separated riders is available at a distance about 1.2km/0.75mi.</br>Riders: Full duplex interphone supports 6 riders a host and 5 auxiliaries. Once upon pairing the host can choose any one of the 5 to talk to. Bluetooth 3.0 connectivity can listen to and share music make phone calls with speed dialing and participate in a four-way intercom conversation.</br>Noise: Advanced Noise Control technology cuts down on background noise for both incoming and outgoing audio.</br>Time: Universal protocol for cross-brand intercom compatibility. Up to 8 hours talk time and 10 days stand-by time for a single charge.</br></br>Product Description</br></br><b>Introduction:</b><br> ?This interphone is designed for the motorcycle rider and passenger who wish to have clear and reliable wireless communication while riding.<br> ?The headset is compatible with Bluetooth cell phones GPS mp3 and suits for almost all sort of helmet for motorcyclists.<br><br> <b>Features:</b><br> ?Full duplex interphone. Support 6 riders in pairing?? a host and 5 auxiliaries. Once upon pairing?? the host can choose any one of the 5 to talk to.<br> ?Wireless communication between rider and passenger on back seat.<br> ?Hand-free for your capable cell phone?? enable your driving intently and safely.<br> ?Wireless Bluetooth music receiver and speaker?? enjoy streaming music from cell phone or other devices through A2DP.<br> ?Wireless headset for Bluetooth?? enable cellphone at a range of up to about 10m33ft.<br> ?Automatic switching among Bluetooth cell phone?? intercom?? stereo music.<br> ?Wind noise DSP cancellation guarantees crystal clear vo