3M high quality mini lcd projector B104 Description: B-104 1. Display technology: LCoS (liquid crystal on silicon) 2. Projection engine: MM200 from 3M company, new RGB light source projection display technology 3. Screen resolution: 640 x 480 pixels 4. Brightness:30 lumens 5. Lamp: LED, over 20,000 hours lifespan 6. Projection image size (diagonal): 5 to 150 inches 7. Projection distance: 40cm to 450cm 8. Zoom and focus mode: manual 9. Screen aspect ratio: 4:3 10. Contrast ratio (on/off): >200:1 13. 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 card 20. VGA input function: support, can directly connect with computer to display 21. AV-in function: support, can project signals directly via DVD,STB, IPhone, PSP and other devices which have AV output function 22. USB port: high-speed USB2.0 transmission up to 4MB/S 23. Signal input: VGA input /AV-in 24. Operation mode: machine button control /2.4GUSB mouse/keyboard 25. Loudspeaker: built-in high-power speaker 26. Audio interface: 3.5mm audio output interface, can be connected with earphone or speaker 27. File format:support Word,Excel,PPT,PDF 28. Video format: MPEG4, AVI, RM, RMVB, FLV, WMV, 3PG, MP4 29. Audio format: APE,FLAC,MP3,WMA,AAC,AC3,WAV,OGG 30. Picture format: JPEG,BMP,GIF 31. Battery: built-in removable lithium-ion battery , support longtime mobile use(up to 90 minutes) 32. Adaptor:5V,2A 33. Power source: battery/ adapter/USB cable 34. Dimension:125*65*25mm Weight:232g