... manual focus to make you see more clear image 3.RGB three colors light source 15 lumens pocket DLP projector and ... Ratio20" at 980mmprojection Size10"~80"Projection Distance0.5M ~2.5M LED LampLED Lam,,Ture 3LED/R,G,B Three ColorsLamp LifeAbove ... lamp warranty one year Picture of Projector workshop Mini 15lumens LED Projector With USB,RGB Three ColorsFor Iphone Built-in Battery