The Outdoor Tech Chips Ultra Wireless Headphone is the first truely wireless audio system with incredible sound quality and easy to use controls. Bump your favourite tunes and receive phone calls wherever you find yourself on the hill. The Chips Ultra are a universally compatible helmet that can slide into most helmets earpads and connects wirelessly to your phone! Bluetooth connection makes this audio system compatible with most modern devices, even those without headphone jacks. 10-hour battery life will see you through the longest of ski days with your tunes intact. Features 40mm drivers deliver Hi-Fi sound to your lid, wirelessly. Yesssss  Patented 2-button control system allows you to adjust volume, change tracks, play/pause music, answer calls, & engage the app from outside your helmet knit, without removing your gloves Rechargeable lithium-ion battery Built-in microphone for calls, chats with Siri or Google Rugged, minimal design fits into virtually any helmet IPX4 sweat- and water-resistant Tested to work perfectly at -20°C/-4° F (brrr, that's cold) PLAY TIME: Up to 13 hours wireless on battery WIRELESS RANGE: 32 feet Outdoor Tech x Giro Chips Ultra Wireless Ski Helmet Audio