Main Features:<br /><br />Clear sound in unique design<br />No display screen <br />TF/Micro SD card reading <br />Can be used as USB flash disk<br />Easy to charge by mini USB port<br />Large capacity lithium battery to ensure long playing time<br /><br />    Specifications<br />General <br />  Interface  : 3.5mm audio jack， Mini USB interface                                                  <br />                        Battery  : Built-in rechargeable lithium battery                                                 <br />Hardware info<br />  Extension card : TF card (not included)                                                 <br />Dimension and Weight<br />  Package weight   : 0.013 kg                                                  <br />                        Package size (L x W x H)  : 5.0000 x 3.0000 x 1.0000 cm / 1.97 x 1.18 x 0.39 inches                                                 <br />Package contents<br />  Package contents: 1 x Cassette Adapter MP3 Player，1 x Earphones，1 x USB Cable                                                 <br /><br /><br /><br />                                                <br />