Detailed Product Description Portable MP3 and ipod USB speaker: A specially design to enjoy listening MP3 wirelessly. It also can work as ipod speaker. Only 260g, light weight for maximum portability. Characteristic 1. Two stereo input jack: One for MP3 and another for other audio devices. 2. A specially designated of double-side input plug: To enjoy listening MP3 wirelessly. 3. A USB out put connector: To enjoy the listening and change to the MP3 simultaneously. 4. Light weight: For maximum portability 5. The high precision drives: To make astonishing bass and clear accurate sound. 6. A stereo output jack: For private listening. 7. The battery compartment: For output use. Hus box 1. Control: Power switch, volume switch 2. Input: DC 6v/two 3.5mm line in jack 3. Out put:3.5mm jack, USB 4. Power: AC adapter, AAA battery*4 Speaker box 1. Material: ABS 2. Speaker:1.25" fullrange*2 3. Impedamce:8ohm 4. Frequency:100hz-20khz 5. Rated output:1.5w*2