Rain or shine the Sena Technologies Expand is ready to go, built with water resistance properties the Expand won't let you down. Make and receive phone calls, stream music from your phone all while chatting with your buddies with a remarkable range of 900 meters. This headset also features universal intercom compatibility, so even if your fellow riders use a different device we've got you covered.; ; 10hr Talk time Pairs up to 4 riders 900 Meter/980 Yard range Noise cancellation Bluetooth 3.0 Hands-free profile Advanced audio distribution