With all kinds of MPG4/ different harddisk, 20G,30G,40G/ different LCD size/all kinds of functions can be selected. We would like to list one of our items' specification for your Ref.: Built-in 20G hard drive,Support IDE（ATA，ATAPI） Built-in Rechargeable Lithium polymer battery With CF Card port,Support CF card and With USB2.0 port, compatible with USB1.1 To receive infra-red remote control signal Compatible with MPEG-1，MPEG-2，MPEG-4，MP3，SVCD VCD1X，VCD2X，CD-DA，CD-ROM，JPEG Record in MP3 format Recording source：MICIN Support MPEG-1，MPEG-2，MP3，LOW COMPLEXITY AAC，AC-3，WMA，DVD-AUDIO Video output: Composite VIDEO，Y and C Audio output: Stereo TV system:NTSC/PAL Display: Via 3.6" LCD color display, with 960*240 resolution, Dot pitch: 0.076*0.228 (mm),To TV Audio : Dual earphone, Connect to Amplifier and TV software upgrading: Auto upgrading，time-taking about 90's With power-saving function USB OTG:To connect USB devices, such as U-disc or digital camera