... memory up to 16 mp4 playermp4 player 1.USB2.0 high-speed transmission 2.Support MP3/WMA/WAV/ASF format3.Firmware upgrade ... , 320 x 240 Pixel ResolutionAudio file formatAAC, Protected AAC, MP3, MP3 VBR, AIFF and WAVDimensions L x W x H3.6 ... *9mm)Weight1.3oz ( 36.8 grams )Warranty1 Year Limited WarrantyAccessories IncludedEarbud Headphones, USB cable, User Guide, Dock Adapter 2.2 inch screen mp4 player