Product Code: W50415 Description and Features: Compatibility-The stereo mini jack connection allows you to enjoy high quality audio from a variety of devices such as Ipod, "Ipodmini",Mp3 and most portable devices. Advanced Technology-The Portable speaker system combines many proprietary technologies to provide the highest quality sound and playing time, The Portable speaker system will provide astonishing bass and clear accurate sound from a pocket sized system. Digital Amplifier Technology-The Class D digital amplifiers Provide clear, and more Powerful sound while extending battery life. Battery Powered-three fresh AA batteries Provide over 24 hours of continuous play at normal to high listening levels. Input:3.5mm Mini stereo Jack Power Output:2 watts per channel Frequency Response:200Hz-20KHz Input Impedance:>10Kohm Signal-to-Noise Ratio:80dB Battery Powered:3AA batteries or charger with outside power Dimensions: Length 120mm*Width 38mm*Height 75mm Weight:180g