Epson EB-X500 XGA 3LCDEnhance the Classroom Experience with Expressive Projections.Engage the young minds with expressive and vivid projections in class with this 3600 lumens XGA projector.- Projection Technology: RGB liquid crystal shutter projection system (3LCD)- Brightness2: White Light Output (Normal/Eco): 3,600 lm- USB Interface: USB Type A: 1 (For Wireless LAN, Firmware Update, Copy OSD Settings)USB Type B: 1 (For Firmware Update, Copy OSD Settings)- Contrast Ratio: 16,000:1- Standard Size:Tele: 30 to 300 [1.07 to 10.95 m]Wide: 30 to 300 [0.89 to 9.12 m]- Dimension Excluding Feet (W x H x D):302 x 77 x 234 mm- LCD: Native Resolution: XGA (1024 x 768)Size: 0.55 (C2fine)- Aspect Ratio: 4:3