... Screen(two point touch),achieve pages and images zoom in and outI/O Port24pinUSB switch interface*1,Headphone *1 ... readerAudio3.5mm headphone jack High-quality stereo loud speaker Built-in microphoneMedia FileAudio file formats supported: MP2, MP3, WAV, ... file formats support: JPG, JPEG, BMP, and PNG.CameraBuilt-in 30,0000 pixels cameraPower adapter9V,1.5ABatteryBattery capacity:1450maSize19.85cm ...