1 Android system Brightness: 2800 lumens. Peak range: 1800-3800 lumens 2 Resolution: maximum support full HD 1920x1080P 3 Display technology: 4-inch LCD display 4 speakers: 4Ohm, 5W x1 (SRS audio technology). 5 3D function: support 3D red and blue 6 The best projection screen size (inches): 70-100 inches, 2-3 meters 7 All AC3 supported models 8 Built-in English, French, Chinese 22 languages
