The VPL-CW275 is designed to deliver a low total cost of ownership & include easy to operate, environmentally conscious features without compromising on superior quality & reliability. Furthermore, in common with all Sony projectors, the projector features the Sony Bright Era 3LCD inorganic panel technology that delivers higher picture quality, substantially brighter images, higher efficiency, better contrast, consistent color stability & longer durability & usability. The VPL-CW275 replaces the low mode brightness feature with auto mode, allowing the lamp brightnessto change with the image presented for optimum efficiency & picture quality. This projector has a contrast ratio of 3700:1, video inputs, HDMI & RJ45 or RS232C connectors for control.