1) Power supply: a) DC 6.0V (AAA x 4 batteries) b) DC adapter: output 6V 350mA 2) Output power: 1W x 2 3) Frequency response: 200Hz-12kHz 4) Speaker: 50mm, 4ohm 5) Plug: 3.5mm 6) Suitable for all iPods, PC, MP3 players, and CD players 7) Excellent tone quality 8) Easy to take Packing: gift box Conveyance: Qty/20' FCL: 13,000units Qty/40' FCL: 25,000units