The 3M XGA-resolution X21i Digital Projector is a powerful, versatile projector with 2700 ANSI lumens of brightness at a 2000:1 contrast ratio that renders large, bright images even when you have a fair amount of ambient light to cope with.
For the classroom, the X21i offers white, green and blackboard modes and with built-in image templates, the user can also project useful guides onto the screen for assisting annotation. Whiteboard mode helps reduce peak white brightness of projection on a whiteboard, reducing annoying glare. Blackboard mode helps provide better color balance when projecting onto a colored background. Daytime mode allows the viewer to see vivid images, even in high-glare environments.
It's got an international auto switching 100 to 240V 50/60Hz power supply and it can project video in the NTSC, PAL and SECAM standards. The X21i is also compatible with most Macintosh and PC resolutions. It does 720p and 1080i high resolution. And those high definition signals will stay in pristine form from the source to the projector thanks to the X21i's HDMI input.