This micro projector adopts optical trapezium adjustment to give you a standard rectangular large picture of 15-110in and very bright image. 500:1 contrast ratio gives realistic colors, which makes projection more vivid. And 16:9/4:3 projection ratio and 500lm brightness create a home theatre lighting effect. Features: Home Theater Effect - Built-in speaker cavity creates a super heavy bass sound, which makes you feel you are at the film world. 15-110in Large Screen - Large size screen of 15-110in gives a large screen enjoyment. Optical Trapezium Adjustment - Optical trapezium adjustment makes sure a standard rectangular picture. 500:1 Contrast Ratio - Large contrast ratio up to 500:1 offers realistic colors, which makes projection more vivid. 16:9/4:3 Screen - The mini home projector throws up 4:3/16:9 screen ratio to offer a super large screen and make it suitable for different backgrounds. No Hurt to Eyes - 500lm brightness and no blue-ray design protect your eyes from getting hurt by the direct light source. Specifications: Product type: Micro Projector Light brightness: 500lm Light type: LED light Contrast ratio: 500:1 Projection size: 15-110in Projection distance: 60-400cm/ 23.6-157.5in Screen width ratio: 4:3/16:9 Optical trapezium adjustment: Support Resolution: 320*240, 1080P Light source life: 20000 hours Speaker: 8Ω2W Plug: US plug, EU plug, UK plug, AU plug for your choice Package size: approx. 14 * 12.5 * 13.5 cm/ 5.5 * 4.9 * 5.3 in Package weight: 365g/ 12.9oz Package List: 1 * Micro Projector 1 * User Manual 1 * Power Adapter 1 * VGA Cable 1 * Remote Control( with a CR2025L button cell) 1、Home Theater Effect - Built-in speaker cavity creates a super heavy bass sound, which makes you feel you are at the film world. 2、15-110in Large Screen - Large size screen of 15-110in gives a large screen enjoyment. 3、Optical Trapezium Adjustment - Optical trapezium adjustment makes sure a standard rectangular picture. 4、500:1 Contrast Ratio - Large contrast ratio up to 500:1 offers realistic colors, which makes projection more vivid. 5、No Hurt to Eyes - 500lm brightness and no blue-ray design protect your eyes from getting hurt by the direct light source.