1080p Projector 4K 200 ANSI Luminous Flux Autofocus Correction 300in Large Screen Projector for Android9.0 Plug Item Type: 1080p Projector Material: ABS Remote Control Battery: 2 x AAA Dry Battery (not included) Projection Display Technology: Single Chip LCD Technology (closed opto mechanical) Physical Resolution: 1920x1080P (true HD resolution) Brightness: Center Brightness 200LM (real standard value, not virtual standard) Contrast (FOFO): 1500:1 Projection Ratio: 1.25:1 (2.7 meters can cast a 100in screen), The Maximum Can Cast a 300in Clear Screen Uniformity:>75% Main Chip Solution: For MTK9255 and for RTL8723 System: For Android 9.0 Storage ROM: 1G and 8G USB Version: 2.0 High Definition Multimedia Interface Version: 2.0 BT Version: 4.2 WIFI Version: 2.4G Original Ratio: 16:9 (16:10 4:3 regulable) Focusing: Motorized Focusing (use the remote control to focusing) Correction: Automatic Trapezoidal Correction (vertical: ±40 degrees), Electronic Four Corner Trapezoidal Correction Speaker: 4 Ohms 2 x 5W Light Source: LED (environmental protection does not hurt the eyes) Machine Power: 90W (maximum) Noise: 30db