Highly versatile, digital projector is ideal for medium-size classrooms or conference rooms. Full 2700 lumens of brightness ensure great performance in almost any presentation or classroom environment. Use on white, green or blackboards and even without PCs using your USB memory device (not included). Built-in image templates let you project useful guides onto the screen for assisting annotation. Other cost-saving features include hybrid filters for 5,000 hour maintenance intervals, 0.4 watt standby power consumption, and Auto-Eco mode for cost efficiency management. X21i Digital Projector also offers project screen size from 30" to 300", Quick Start, Instant Off, True XGA (1024 x 768), HDMI connection, remote mouse emulation, Auto Vertical Keystone adjustment, seven preset picture modes, advanced security features, vertical lens shift, 2000:1 contrast ratio and AMX Device Discovery. Lightweight, portable projector is compact enough to fit into virtually any universal computer bag.