Material: Plastic Size: 4.2cm x 2.8cm x 1.3cm(LxWxH) Color: Black Supported audio formats: MP3 Storage capacity: no memory, Insert TF (Micro SD) memory cards, mobile phones with a small memory card Interface : mini USB 2.0 Battery Type: Built-in high-energy rechargeable lithium battery, about 4 hours of continuous playback Frequency: 20HZ-20KHZ Download song: 1.plug TF card, connect the data cable, the machine\'s switch to ON, start to download songs 2. After the download is complete, exit on the computer disk, MP3 removed from the data line, then switch to OFF, the download is complete. Tips: This MP3 To connect the computer to find the card removable disk Product description: Free to entertainment, simple, elegant, stylish. Support for digital music playback MP3 WMA format. Can be used as a mobile flash drive, songs or data stored anywhere. Can be used for TF card reader. In addition to MP3 and mobile storage disk function. Using USB 1.1/2.0 interface, support hot-swappable, plug and play. No external power supply. Using a variety of operating platforms. The storage medium. No mechanical components , anti- vibration, anti-electromagnetic interference. Built-in high-energy rechargeable lithium battery, long standby time. Battery Description Use ''' HURRY BUY NOW'''