The Interphone Active Bluetooth Intercom System Single Pack (FOR 1 HELMET) is packed with features... GENERAL: Talk time - up to 20 hours Stand by - 1000 hours New 80MHz digital signal processor (DSP) to improve the audio experience Direct function buttons (Quick Touch) User-friendly interface ADVANCED FEATURES: Smartphone App - compatible with iOS and Android. Allows intercom configuration and control directly from the Smartphone Vox - intercom activation using voice commands Anycom - allows communication with all Bluetooth intercom devices by different brands, in full duplex mode Automatic reconnection - if the intercom connection is lost, it will be automatically reactivated as soon as coverage is restored INTERCOM: 4-way - conference mode between 4 bikes, or 2 bikes with rider + passenger 3-way - 3 bikes or 1 bike + 1 bike with rider-to-passenger 2-way - bike-to-bike or rider-to-passenger INTERCOM RANGE: Up to 1 km in full duplex MOBILE PHONE: Speed dial - possibility to store one telephone number, with rapid redial via intercom command Voice call (depending on mobile phone model) Last number redial BUILT-IN FM RADIO: 88.0 MHz to 108 MHz receiver RDS function (adjusts to best frequency depending on area) 8 pre-set stations Automatic storage of first 8 most powerful stations Automatic radio mute for incoming calls GPS: Compatible with most major Bluetooth navigation devices for motorcycles GPS voice instructions Compatible with most major smartphone navigation apps MP3 / MUSIC: Wireless MP3 music (A2DP/AVRCP) through smartphone and MP3 player Music sharing FIRMWARE UPDATE: Firmware update-ready directly from PC (Windows and MacOs) COMPATIBILITY: Majority of helmets on the market All smartphones equipped with Bluetooth technology GPS navigation devices with Bluetooth technology and HFP profile Intercoms by other brands Earlier Interphone models WATER RESISTANT: Waterproof - IP67 AUDIO FEATURES: Pre-recorded voice messages (with updatable multi-lingual packages) Directional windproof microphone NDVC - noise dependant volume control Dual volume adjustment mode a) for jet and modular helmets - b) for full face helmets CHIPSET / BATTERY / CHARGER: Chipset - low-energy high performance processor Bluetooth version 4.2 "Infinity" battery with record autonomy USB connecter charging cable microusb Connectors for microphone and speaker (Mini USB) and for charging, data and AUX (Micro USB) DIMENSION: Weight - 55 g Length - 86.9 mm Height - 50.4 mm Depth - 22 mm WARRANTY: 2 Years