Artsound 4T M W. Frequency response: 180 - 20000 Hz, Peak power: 10 W, Sensitivity: 74 dB. Battery type: AAA, Battery life (max): 16 h. Dimensions (WxDxH): 54 x 94 x 120 mm, Weight: 300 g. Colour of product: White. Compatible products: MP3, PDAs, iPod, Speaker power: 5 W