Features: 1. Practical: The MP3 music player is specially designed for listening to music at home or when going out.2. Good Battery Quality: Built-in Li-ion battery, which can be directly connected to the computer for charging.3. A Variety of Application Occasions: Suitable for different occasions such as shopping, vacationing or running.4. Portability: This headset is small and portable and can be easily worn or clipped onto your clothes.5. Perfect Gift: This headset is a good gift for you and your friends, so they can enjoy music, very practical. Description:The headphone is made of durable material and easy to use, very fashionable, suitable for various occasions such as shopping, vacationing or running. Specifications:Product type: MP3 player cardBattery capacity: 90mAhWorking time: 3-4 hoursMusic playback: MP3, WMA, WAVComcard type: TF cardmax up to 16G)(not included)Interface: USB 1.1/2.0Support WIN98/SE/ME/2000/XP system. LIUXCORE2.4It also has MP3 and mobile disk functionIt can be used as a TF card reader with shuffle, loop playSize: 45*29*12mmPackage Included:1*MP31 Music Player*Earphone1*USB CableNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee that the style is the same as shown in the pictures.2. Due to manual measurement and different measurement methods, please allow 1-3cm