HD WIDE-ANGLE LENS Increases the projected transmittance and prevents stray light from interfering with the image and enhancing image sharpness. The latest LED light technology and 3500:1 contrast ratio, it can deliver +85% brightness over the similar projector. UPGRADED COOLING SYSTEM Updated Nidec oil-bearing fans and cooling systems, much higher heat dissipation efficiency. And also very easy to adjust the focus and distance, super easy to adjust, and use it wherever you use it indoor or outdoor. Enjoys Entertainment For A Longer Time. ENHANCED NOISE CONTROL The latest technology of the dual-fan system based on the advanced noise reduction technology has solved the annoying airflow problem of overheat and noise, there's hardly noise produced.