Supports digital music playback in MP3 and other music formats.Can be used as a mobile flash drive to store MP3 songs or data anytime, anywhere. Has the functions of MP3 and mobile storage disk at the same time.Built-in high-energy rechargeable lithium battery, ultra-long standby time. Stylish and compact appearance design, exquisite metal shell, a good gift.With random play and loop play functions, random play, as you like. Simple operation, turn on the power to . Can be clipped at will, clipped on the cuffs, collars, etc. of clothes, convenient and fashionable. Screen size: about 2.79cm/1.1inch card type: TF card Expansion card: support mode: push button Interface: USB 2.0 Headphone jack: 3.5mm Support audio format: MP3 Screen Colour:monochrome screen Screen resolution: 160x128 Note! The MP3 has no memory and needs to be used with a memory card, which can support up to 16G. This MP3 has charging protection and good battery life. It can be for 30 minutes and can for 2-3 hours continuously. It supports card insertion and data, and can be adjusted in Chinese and English. Colour:Black Material:Metal Size:47x32x11mm Package Contents: 1x player 1x earphone 1x charging cable 1x memory card 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.