· Bluetooth Version: V4.2 Waterproof IPX5 · The standard: 3.5 line interface. · The charging time is about: 4H; · Battery power: 5200mAH Power Bank · Charging interface: MICRO USB; · The speaker: 5W * 2; · Working time: Bluetooth 12 hours; · Audio frequency: 100Hz-20KHz; · Charging time about: 4H; · Audio: Bluetooth device, LINE IN. · Charging interface: MICRO USB; · Bluetooth effective distance: 10 meters;