Work with iPod, MP3/MP4 player, notebook and any audio player with a 3.5mm jack

1.Power Supply: Battery  (AAA 3.0V * 2),
2.Output Power:2W*2
3.Speaker Unit: 50mm x 2W*1speaker, 4 ohms
4.Frequency Response:275 Hz-20KHz
5.Signal Cable: 15cm STR cord, 3.5mm jack
6. Work with iPod, MP3/MP4 player, notebook and any audio player with a 3.5mm jack