The Smith Outdoor Tech Wireless Audio 2.0 Helmet Speakers are the universal wireless helmet audio + walkie-talkie system by Outdoor Tech™. Connect them to your Bluetooth enabled device, drop them into your audio compatible helmet and enjoy 10 hours of continuous playtime. Loaded with full audio controls, phone call capability, voice command (Siri) power and now with a push-to-talk walkie-talkie. Do it all while keeping your mittens where they belong ... waving in the air, like you just don't care. Imagine it: warm hands, fresh powder, total audio and communication control, and no wires inside your jacket. No more fear of dropping your phone off a lift.