The Dell 1510X Value Series Projector offers essential features and network manageability at a price that respects your budget. Enjoy vivid truetolife pictures with 3500 ANSI Lumens max brightness and high 21001 Full On/Full Off contrast ratio at XGA native resolution 1024x768. The RJ45 connector is integrated for network manageability including power management updating firmware checking status receiving email alerts and more. RJ45 cable not included. An array of connectors such as dual VGA connectors USB port and HDMI connector enhance its connectivity. Cabinet Color Black Aspect Ratio Native Aspect Ratio 43 Compatible Aspect Ratio 169 Contrast Ratio 21001 Display Size 30.8" 307" diagonal Lens FStop F/2.42.66 Zoom Lens Manual 1.2x Throw ratio 1.6 wide 1.92 tele Display Colors 1.07 Billion Throw Distance 3.9 ft 32.8 ft 1.2m 10m Lamp Lamp Life Cycle Up to 3000hour Typical Up to 4000hour EcoMode Lamp Type Philips E20.9 225W Lamp life rating is typical time for lamp lumens to diminish by 50% based on lab testing. Actual operating life will vary and be less under conditions including high use temperature dust or abrupt poweroff environments.