Get all the info here - outdoortechnology.com/Shop/Chips/chips-wireless-helmet-audio.html
These are the Chips, Outdoor Tech's Bluetooth, universal, fully-wireless audio system for ski and snowboard helmets. Connect them to your bluetooth device, drop them into any helmet with an audio liner and your skull will be dripping with Kenny G's undeniable melodies before you can say uncle. Play and pause, raise and lower volume, answer calls and skip tracks from the Chips' two button interface, all without removing your mittens. Warm hands, total audio control, no wires, fresh powder, and whatever music you please.