Sharp DK-AP7P, 2.1 channels, 4.4 W, Black, AA, 100 - 240 V, 50 - 60 Hz Sharp DK-AP7P. Audio output channels: 2.1 channels, RMS rated power: 4.4 W. Product color: Black. Battery type: AA, AC input voltage: 100 - 240 V, AC input frequency: 50 - 60 Hz. Weight: 20.3 oz (576 g). Dimensions (WxDxH): 2.75 x 3.03 x 7.8" (69.8 x 77 x 198 mm), I/O ports: 3.5mm