TF Capacity: Max support 32G (Not included)Powered By:1 x AAA Battery(Not included)Screen Size: 30x8.5(mm)Item Size: 95x25x16(mm) Net Weight: 26gType:MP3 PlayerMusic Format: MP3Port: USB2.0 PortAudio Output: 3.5mmInstructions for use:Step 1: Install Micro-SD before using MP3 player, connect it to the USB interface of the computer, and wait for the driver to update automatically.: Format Micro-SD into FAT32 file system.Step 3: Store the MP3 file with the bit rate of 128kbps in the root directory of Micro-SD.Notice:Micro-SD should be formatted in FAT32 formatTF card is not included,you have to use your own one(max support 32GB)Please confirm there is no battery before plug into the computer.Each Mp3 screen have protector film, .Colour:BlackMaterial:PlasticPackage Contents:1 * MP3 Player(without 1xAAA battery)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.