Imaging unit:TFT LCD Use:Business & Education, Home Theater, etc. Portable:Yes Brightness:650ANSI lumens Contrast Ratio:3000:1 Resolution:1920*1080 Lamp:LED Lens:Automatic/electric,HD Coating Lens Operation System:Android 9 Resolution:1920*1080P/4K Support Image size:50-200 inches Projection ratio:1.25:1 Focusing mode:auto-focus Whole machine power:145W (MAX) Input Voltage:100V-240V 50/60HZ Interface:USB*2/HD/AV/AUX/RJ45 keystone correction:Electron Trapezium ±45 Vertical/Horizontal+Auto Keystone Projector installation:Front/Rear/Hanging Language:Support 23 Multi-language Lamp Life:20000Hours Size:28x28x10cm Weight:2.5Kg