... for iPod iPhone,USB/SD/Display(Optional) with CE,ROHS MT-1608B, 2.1CH high-power amplifier use for iPod iPhone,USB/SD/Display(Optional)Wooden itower Speaker For Iphone ... .,4/. Built-in subwoofer on the base, 2.1CH system. 5/. Chargeable for iPod/iPhone, center control and full function control, 6/. MDF box ...