With high resolution, high brightness, high contrast and Acer Color technology, your presentations will be more compelling with sharper texts and vibrant images, even from a distance. The accumulation of dust over time can cause a projector to not function properly and 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, and requiring less maintenance. Essential series projectors have features that make them easy to use. Essential series projectors sport eco-friendly technologies that are better for the planet and good for your wallet.