*Output Interface: AV, VGA *Input Interface: Audio *Projector Brightness: 10 Lumen *Maximal Resolution: 640*480 *Aspect Ratio: 4: 3 *Pixel: 920, 000 *Screen Size: 20"(0.68m distance), the best image quality. *Effective scanning frequency band: Level: 120Hz *Lamp Power: 1W. *Lamp Life: 20000 Hours (Average) *Video Standards: Analogue RGB24BITS, NTSC/PAL, CVBS TV *Built-in speaker power: 1W *Power Supply: Built-in Li-ion battery, 2500mah, 3.7V, or AC *Total Power: 4W *Weight: 200g *Dimension: 72mm*72mm*72mm *Light source: LED Features and Function: * Support computer VGA port, can project computor contents on the wall. * Support AV IN, can be connected to 3G Mobile Phone, iPhone, iPod, PDA, DV, VCD, DVD and other digital products with A/V output for immediate business presentation, watching movies and playing games, etc. *Large screen, 20"(0.68m) for best image quality. *Support USB2.0 high speed transferring files from PC conveniently. *Plug-and-play without any trouble of installing software. *Adjustable focusing mechanism to suit different screen size needs. *Built-in speaker to convenience the sounded presentation or sharing *Mini size and light weight *Support MP3/WMA/PLAC/APE music formats, PLAY FX sound effect, great acoustic quality. *Support Video Formats: MPEG4(AVI)/RM/RMVB, with wide screen high brightness display, 400x240 resolution. *Support JPEG/BMP/GIF photo formats show, photos auto slide show(BMP format). *With built-in Flash (128MB-4GB optional), Support SD card. *Several sound effect, circulation style optional *Support multi-language: English/French/German/Italian/Spanish/Chinese etc(17 languages) *Support Hardware Upgrade. *Support E-book and bookmark. *Support the DRM9 data jurisdiction management *Support Hard Disk Function. *Built-in Li-ion battery exchangeable.