This is the world's first ultra-short projector with advanced laser display (ALPD) technology, which delivers up to 150 inches of full HD quality images in 50 centimeters, with product life up to 20,000 hours. To achieve user-friendly design goals, the high-tech product uses a compact, minimalist "box" design language, and carefully maintained the host and Bluetooth remote control design style consistency. In any corner of the room control the host, voice assistant quickly finds programs and other interactive ways for the user to bring a new movie viewing experience. Basic information: Optical parameter Display: 0.47 inch DMD Resolution: Full HD (1920 x 1080) Support resolution: 4K Light source: ALPD 3.0 Brightness: 5000 lumens Light mode: highlight, movie, normal Auto mode: save power, eye protect Brightness uniformity: JBMA more than 80 percent Color gamut: NTSC 80 - 85 percent Central contrast: 2500: 1 - 3500: 1 Color temperature: standard, cold color, warm color Projection Parameter Throw ratio: 0.233: 1 Best project distance: 150 inch.