Features: Sealing Design,Efficient Heat Dissipation,Greatly Promote Its Stability And Life Span. Led Light,Can Reach A Length Of 30,000 Hours. The Color Looks More Brilliantly Both Image Modes Can Be Freely Transferred Between 16:9 And 4:3 Conversion; 30w Ultra-Low Power Consumption, More Energy-Saving, More Environmental Protection Ultra-Silence And Dustproof Design,No Need For Internal Clearning Multi Input Interfaces：Av/Vga/Usv/Sd/Hdmi/Micro Usb； Optical Trapezoidal Correction Function, Adjusting The Picture Trapezoidal Distortion Mini Usb Interface, Can Be Connected To Mini Power Supply Device,Freely Project At Anytime And Anywhere Projection Distance 1.1m-3.8m