HD Home Projector 1.Native Resolution 1280*720 pixels and brightness 4200 Lux with outstanding sharpness image,it is unprecedented and will bring you fire-new authentic experience. 2.Big screen,Max 210" with 2 built-in 5W powerful speaker and surround sound system which can obtain your a shocked movie experience 3. LED lamp lifte lasts for approximately 60,000 hours. Newset innovative cooling system with the heat dispersion,making noise lower. HIFI level Stereo speaker Built-in dual a powerful 5W speaker with SRS Sound System and 3D,this projector combines incredible screen performance with room-filling sound for an immersive multimedia experience. -No need projector screen, you can simply use a white wall -Best effect is under dark environment for watching tv or playing games.