Built-in Li-ion battery, directly connect with PC for re-charging. <br>Play time: 3-4 hours. <br>Also can be uses as USB Flash Drive (You can use it to store any data / files). <br> <br>Specifics: <br>Size: 4.3*3*1.4CM <br>Headphone Jack: 3.5mm stereo Jack <br>USB data storage, supporting USB 2.0. <br>Stylish design in a compact plastic case with a clip. <br>Easy to clip-on to anything. <br>No Built-in Memory. <br>Support music format: MP3.1、Scratch-proof shell provides you comfortable hand-feel, and the case has strong resistance to pressure and impact, touch button makes it easy to operate the player, you could enjoy music at anytime and anywhere. <br>2、 <br>Compact and stylish mp3 player, clip design, easy to carry. <br>3、 <br>Built in rechargeable lithium battery, environmental friendly <br>4、 <br>Support for multiple MP3 music format of digital music playNo bulit-in memory in the player, it can only play music when insert TF card?<br /> <br>1 x Clip MP3 Playe