The cool-running XJ-A142 Slim Line projector has the ability to run all day, every day in extended-use applications including digital signage, museum displays, and other challenging environments. Run the XJ-A142 worry-free, knowing you will not shorten its expected life or damage the projector's bright, high-impact images. Built-in 1 watt speaker DLP technology Auto brightness adjustment On-screen presentation timer Instant Off - no cool down required 20,000 Hour Operating Life No Lamp Replacement Brightness 2,500 Lumens (ANSI)1 Resolution 1024x768 Aspect Ratio 4:3 (XGA) Contrast 1,800:1 (full on/off) Display Type 1 cm DLP x 1 Col