Hercules i-XPS 120 Outdoor. Audio output channels: 2.0, RMS rated power: 6 W. Power source type: AC, Battery type: 4C (LR14). Dimensions (WxDxH): 340 x 160 x 150 mm. Compatible products: iPod Nano (1st, 2d, 3rd gen.), iPod Mini, iPod (30GB, 60GB, 80GB), iPod Classic, iPod Shuffle