The Sena Snowtalk 2 Bluetooth headset makes it easy to keep in touch while on the mountain. Snowboarders and skiers can speak to each other using Sena's Bluetooth communication technology. Snowtalk 2 easily fits into the ear pads of most snowboard or ski helmets. The included microphone connects to the device and enables you to communicate with up to a total of four Sena Bluetooth headsets; all without the need for any cell phone/data connections! You can also pair to your phone and take phone calls or just vibe out to your playlists through the wireless speakers.