Enjoy the ultimate home audio experience with beFree Sound's 2.1 Channel Bluetooth Tower Speaker System. This speaker system is designed with sophistication, featuring a sleek look and smooth sound. With Bluetooth, USB, SD and FM radio capability, the system offers the best possible listening options for your enjoyment. * 6.5" Amplifer x2 4"*2 * Output power:35W*2 * Frequency response:40Hz-20KHz; * Separation:50dB; * S/N Ration:75dB * Features:USB/SD/FM/Bluetooth/Optical/Coaxial * Remote