Specification: Material: Plastic Color: Black Audio Track: Dual track, Single track (optional) Output power: 2.5W + 2.5W Impedance: 4 ohms Frequency response range: 90Hz - 20KHz Signal to noise ratio: 80dB Distortion: 0.3% Power: USB / DC5V Package list: 1 * Pair of Speakers

Power is supplied by plugging the USB power cord into almost any USB port, or by connecting to an AC outlet adapter (not including an adapter). Enjoy music without headphones or large wires for external speakers. This USB speaker gives you an ultra-portable mini sound system. Compact and lightweight: You can put this portable speaker in your bag. Cool and cute speakers: You can share great sounds with friends or family.