Hama Active Loudspeaker Kit AS-62. Audio output channels: 2.0, RMS rated power: 24 W, Frequency response: 100 - 20000 Hz. Input voltage: 6 V, Battery type: AAA. Dimensions (WxDxH): 160 x 28 x 100 mm, Weight: 0.21 kg. Colour of product: White. Compatible products: MP3 player, iPod