The EP761 projector has the extras you want and the power you need to present stunning images in a variety of conditions, thanks to the clever design of the folks at Optoma. To create a clear, vivid image, the EP761 uses cutting-edge DLP display technology, and features a color depth of 24-bit (16.7M colors) for accurate color reproduction. Featuring a contrast ratio of 2200:1, this model avoids the "washed-out" images so common in other projectors, delivering blacker blacks and whiter whites. With a native resolution of 1024 x 768, this Optoma projector can handle all the latest video formats, and with the ability to handle sources up to 1400 x 1050 (SXGA+), you won't need to fret about not being able to display a critical presentation. This projector works with a screen placed anywhere from 3.9 feet - 39.3 feet away. The size of the picture the EP761 can display is anywhere from 34.59 inches - 304 inches, depending on the device's distance from the screen. The aspect ratio for this Optoma projector is 16:9 (wide screen). A widescreen 16:9 image is ideal for home theater use and watching movies, while a standard 4:3 image is great for presentations or connecting to a computer. You'll have plenty of connections with the EP761, as its inputs include a composite video plug. Consider where you'll use your projector when looking at brightness information. In most instances, a minimum brightness of 1000 ANSI lumens is sufficient for home theater use in a dark room, but for use in presentations or other settings where the room will not be as dark, a brightness of at least 2000 ANSI lumens is recommended. The EP761 has a brightness of 3200 ANSI lumens. Before purchasing a projector, don't forget to research how long you can expect its lamps to last and how much a lamp will cost to replace. This projector comes with a lamp rated at 2000 hours of use. A projector with such solid fundamentals doesn't have to skimp on extra features, either with special additions like keystone correction and more. The remote even includes a laser pointer. Don't worry about connecting this projector to a speaker system either, as you can use the 2 watt speakers built right into the projector. Optoma describes the EP761 as a portable projector. It measures 11.51 inches wide by 8.66 inches deep by 3.73 inches high. It weighs 6.3 pounds. The manufacturer warranties this product for 1 year, with lamp coverage for 90 days. The part number for this device is Ihre Art.Nr. 95.87M01GC0E.