Model No. PDVD-8028 Portable DVD/VCD/CD/MP3 with 7.8\\\\\\\'TFT LCD Driving active matrix 7.8 inch Diagonal Wide-screen TFT LCD Monitor; Optical digital output for DTS & Dolby Digital AC-3 video; Built-in audio of 5.1 sound channels out; Virtual Surround Sound (V. S. S.) output; Play DVD, film CD, inter-dynamic full motion video CD, MP3, ESP (Electronic anti-shock) functions. Functions Super Thin & Light Design for convenient travel; Built-in Lithium ion rechargeable battery; Full functions, Slim size remoter for easy operations and convenience; Built-in Stereo speakers for great sound just about anywhere; Normal (4:3)/ Wide (16:9)/Zoom Screen adjusting the picture size. /16:9/ZOOM.