With WXGA resolution, high brightness, high contrast & Acer Color Technology, your presentations will be more compelling with sharper texts & vibrant images, even from a distance. Combined with DLP 3D Ready you can also enjoy an immersive theater-like 3D entertainment experience. The accumulation of dust over time can cause a projector to not function properly & lose its original brightness. With Acer Dust Shield, Essential series projectors can defend against the detrimental effects of dust, allowing them to work better, for longer, & requiring less maintenance.