Brand Name: TouYingerKeystone Correction: Manual CorrectionKeystone Correction: NoneOrigin: CN(Origin)Certification: CECertification: FCCCertification: RoHSType: MiniScreen Scale: 4:3/16:9Portable: NoPower: 60wZoom: x 1.35Home Theater Projector: yesProjection Technology: LCDSystem: Multimedia SystemOptical Resolution: 1920x1080dpiBrightness: 5500 LumensModel Number: T9Projected Dimension: 30-300 inchesLight Source: LEDContrast Ratio: 2001:1-3000:1Use: HomeProjective Mode: ThrowingProjective Mode: CeilingProjective Mode: Back ProjectionProjective Mode: Mirror ImageWeight: 1.0KGProjection Distance: 0.9-3.5Warranty: 2 yearsT9: Basic version, No Android wifi, no keystoneT9A: Mirroring version, no keystoneT9W: Android wifi version, Electronic keystone correction, it can install apps