Display Tech: 4.0” LCD.Light source: LED, 30000Hours long life.Brightness: 200 ANSI lumens.Contrast Ratio: 1800:1.Resolution: 1280*720, Support to 1080P.Aspect Ratio: support 16:10Projector Ratio: 1.35:1Project Dimension: 20-200Project distance: 1.5 - 4mInterface *1; USB (Support read Data from USB SSD Hard Drive) *1 ; TF (max support 32G U disck) *1 ; VGA *1; AV *1; Audio Out (3.5mm Headphone jack) *1 AC-in AC90V-240VOthers specifications Projection Mode: Front/ Rear/ Ceiling front/ Ceiling rear Keystone Correction: V:+/-15 degree Power consumption: 50W Device:185*144*77mm/ 7.2*5.6*3inch Weight:0.92kg/ 2.02 LBLarger projection ratio, projection screen size according to the environment, experience cinema-level viewing anytime, anywhere.