U-DISK digital photo frame with card size Pannel size: 1.5inch Picture Resolution: 128*128 CSTN Power saving mode: 120seconds automatically shut down Build-in flash: 128M-8G(unit price haven't included) Power supply: Build-in 3.7v Lithium Battery or 5v USB Formats Supported: BMP, JPG, PNG and TIF OS support: Win98/ME/NT/2000/XP USB: USB2.0 It is just a card size. Easy for carrying and operate. Can insert in your purse,and no need any drive. The digital photo frame not only show the photos, also display the TXT file. Unit Size: 86*54*5.5mm