Max 400"" Screen and 800 Ansi Lumen: wifi projector adopts 6 layers high Refractive glass lens which delivers a evenly distributed, no-blurry-edges image Using Germany imported chips and Japanese native light bulbs which double level up the image brightness, clarity, color richness, restore the authenticity of color to the maximum extent. Perfect for indoor outdoor home theater. The adjustable, extra-large screen offers wonderful visual effect.