IPX7 Water proof. Bluetooth, caller ID, NFC, Dual Point. Built-in rechargeable Li-ion battery (16 hours battery life). Speakerphone with voice confirmation. Charge your phone or other devices remotely. APT-X, voice recognition Call answer / terminate. 3.5 mm Aux in connector for added device compatibility. 2 5" Neodymium drivers with a passive radiator.