5.25 " amplifier + 3 " speakers x5-* output power: 30W+10w*5-* frequency response: 40Hz-20khz,-* separation: 50Db,-* s/n ration: 75Db-* features: USB/SD/FM/Bluetooth/remote-the speakers in this system are wired the Bluetooth is to allow the system to wireless connect with any other Bluetooth enabled device.