Mini USB rechargeable TF card MP3 player it is very convenient to use. It supports Max 4 GB TF card and MP3 music format. It is built-in rechargeable 120mAh battery. You can enjoy wonderful music on the way to work go home and before sleeping. The mini and built-in clip design is convenient to use. Color: Black + white Memory Type: TF card Memory Capacity: No memory Supports TF card up to 4GB Display Screen: No screen Control Type: Button Audio Formats: MP3 Data Transfer: USB Earphones Jack: 3.5mm Battery Type: Built-in 120mAh battery (2~3 hours working time) Loudspeaker: No Feature: Built-in clip Accessories: 1 x USB cable 1 x Earphone