HOME Amplifier: MP3, USB, SD, FM Radio With remote control. Model: Kuku SC 111BT characteristics: - Bluetooth - LCD display - MP3 player - Slot USB drive - Slot Micro SD card memory - Radio FM frequencies: 87,5MHz - 108MHz - Power: 60W + 60W - Frequency response: 20Hz-20KHz - Harmonic distortion: ~ 0,05% 4W 1 KHz - Signal / noise ratio: 85dB