1.Power Supply: Battery  (AAA 3.0V * 2),2.Output Power:2W*2 3.Speaker Unit: 50mm x 2W*1speaker, 4 ohms4.Frequency Response:275 Hz-20KHz5.Signal Cable: 15cm STR cord, 3.5mm jack6. Work with iPod, MP3/MP4 player, notebook and any audio player with a 3.5mm jack

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