Life Jacket Bluetooth Speaker is IPX7 Waterproof with 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; 3.5mm Aux-in connector for added device compatibility; 2 5" Neodymium drivers with a passive radiator. Red.