Dynamic RGB Power supply: battery Frequency response: 80 Hz to 15 kHz Usage: home theater, portable audio player, mobile phone, karaoke player, computer, stage Special Functions: Wireless, Portable Charging time: 1-2 hours Color: Black/Grey/Green/Navy Blue Battery capacity: 8800 Working time: 6-8 hours Power: 70W IPX6 Waterproof New Model: A30 Party Function: BT/AUX/TWS