Quantity 1 Color Black Audio Mode Popular Display Mode Sequence Menu Language No Display Size No Display Resolution No Touch Screen No Memory Card Type No Memory 4GB Max Extended Capacity No Video Formats No Audio Formats MP3 / WAV / WMA Image Formats No E-Book Formats No Record No Headphone Jack 0 mm Other Connections 1 x Micro USB port Battery Type Li-ion Battery Capacity 180 mAh Work Time 8 hours Other Features Power on / off volume page up / page down stop button; Water resistant level: IPX5; Frequency response: 30Hz~20KHz Packing List 1 x MP3 player 1 x USB charging cable (80cm) 4 x Ear buds 1 x Chinese & English user manual