3M high quality mini projector B104Description:B-1041.  Display technology: LCoS (liquid crystal on silicon)2.  Projection engine: MM200 from 3M company, new RGB light source projection display technology3.  Screen resolution: 640 x 480 pixels4.  Brightness:30 lumens5.  Lamp: LED, over 20,000 hours lifespan6.  Projection image size (diagonal): 5 to 150 inches7.  Projection distance: 40cm to 450cm8.  Zoom and focus mode: manual9.  Screen aspect ratio: 4:310.  Contrast ratio (on/off): >200:113.   Operating system:win CE 5.0
14.   CPU Frequency:Dual core 500M.
15.   Mouse support:support 2.4GUSB mouse operation
16.   Keyboard support: support 2.4GUSB keyboard operation
17.   Television signal(optional):CMMB,DVB-T player
18.   Wireless WiFi(optional):built-in WiFi wireless network module
19.  Storage: built-in 2GB~32GB storage space, Support TF/micro SD card20.  VGA input function: support, can directly connect with computer to display21.  AV-in function: support, can project signals directly via DVD,STB, IPhone, PSP and other devices which have AV output function22.  USB port: high-speed USB2.0 transmission up to 4MB/S23.   Signal input: VGA input /AV-in24.  Operation mode: machine button control /2.4GUSB mouse/keyboard25.  Loudspeaker: built-in high-power speaker26.  Audio interface: 3.5mm audio output interface, can be connected with earphone or speaker27.  File format:support Word,Excel,PPT,PDF28.  Video format: MPEG4, AVI, RM, RMVB, FLV, WMV, 3PG, MP429.  Audio format: APE,FLAC,MP3,WMA,AAC,AC3,WAV,OGG30.  Picture format: JPEG,BMP,GIF31.  Battery: built-in removable lithium-ion battery , support longtime mobile use(up to 90 minutes)  32.  Adaptor:5V,2A33.   Power source: battery/ adapter/USB cable34.   Dimension:125*65*25mm  Weight:232g