TUTTONICA TUTTO TB 2 PRO Interactive Touch Screen Projector Specifications:Interactive touch function-play games and draw Auto keystone correction New unique display Technology: 3LCD & DLP & LCDLatest Opto-mechanical Seal Tech--Exclusive PatentLamp: LED Lamp LED Life:20,000HBrightness: 1000 lumens(100ANSI lumens) Native Resolution:1080P, max support 4K Speaker : 2* 3W speakerContrast Ratio: 1500:1Operating system: Android 9.0 (2G+16G)Built-in battery optional Projector Size: 30-100inchesInterface:1x USB/1x HDMI In/1x AV-in compatible Audio OutDimension: 11 13.5*15cm,Gross Weight: 1.05KG