The result of a collaboration between SENA and Shoei, the SRL-02 is designed specifically to fit the GT-Air 2 & Noetec 2 models. Features: Bluetooth v4.1 Bluetooth intercom up to 1.6 kilometres It supports up to 8 riders Group intercom Universal Intercom™ Music sharing Voice command Advanced Noise Control™ A smartphone app for iPhone and Android Waterproof A built-in FM radio receiver with station scan and save Optional Sena remote control support (not included in the pack) Charging time: 2.5 hours