Appearance: The player adopts the classic appearance design, which is simple, exquisite and fashionable. Function: Player supports digital music playback in MP3 and wma music formats, with display. Power supply: A rechargeable lithium battery is built in the player, which can be played continuously for 20 hours when fully . Multi-language: Player supports , Portugal and English (default English). Automatic shutdown: U disk can effectively save power, green trend, and set the automatic shutdown time Item type:Mini MP3 Player Power supply:1 x AAA battery (not included) Interface:USB 2.0 Language:, Portugal, English (default English) Weight 31g/1.09oz Colour:B:Blue Material:Plastic+Metal Size:. 9.5x2.6x1.6 cm/3.73x1.02x0.63inch Package Contents: 1 * Mini MP3 Player Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.