Trust Sound Station for iPod SP-2990Bi, 1.0 channels, 12 W, 100 - 18000 Hz, Black, 180 x 180 x 50 mm, 3.5mm Trust Sound Station for iPod SP-2990Bi. Audio output channels: 1.0 channels, RMS rated power: 12 W, Frequency range: 100 - 18000 Hz. Product colour: Black. Dimensions (WxDxH): 180 x 180 x 50 mm, Connector(s): 3.5mm