This helmet intercom is ideal for travel as a couple and is an excellent assistant for the rider: it helps him manage incoming calls, allows you to store a number for quick calls, and you can also listen to music or the radio, connect it via Bluetooth® to the App for Android or iOS and listen to the voice instructions of the GPS navigator: the battery lasts up to 15 hours! Leave with Interphone Connect for that weekend on the road you've always dreamed of! AUDIO: NDVC - automatic volume adjustment, dual volume adjustment mode for jet and modular helmets - for full-face helmets, windproof directional microphone MOBILE PHONE: speed dial - ability to store a phone number to be recalled quickly with a command from the intercom, voice call, redial of the last call, sharing a telephone conversat.