1.Full-sealed dust-proof optical engine design. Quality is very stable,the after-sales rate lower than 1%. 2.Brightness higher than the market similar level projector. 3.Light boy Smart magic cube design,Not only Classic and elegance,but also Durable and fall resistant 4.Horizontal/Vertical,Four Corner Keystone Correction 5.MTK9269 Chip,Good chip is the Hardcore.