[Best Viewing Experience]: Supports for manually adjusting focus, you can freely adjust the aspect ratio from 16 : 9 to 4 : 3, and allows up to 1.1-4.0 meters projection distance. Using 20 thousands hours of long life LED light source, which is harmless and no radiation, environmental-friendly and durable to use.  [Screen Mirror and HIFI Stereo Speakers]You can use an HDMI adapter (not included) to connect hd projector to a smartphone or laptop for screen synchronization. LED projector also has a built-in HIFI stereo speaker ( 8 ohm2w) with SRS sound system, providing powerful sound effects for movies or games.  [LED Environmental Protection Light Source]Mini projector is equipped with LED light, and it delivers vivid and clear images, being perfect for home entertainment. The long-term contact with the display screen can not be ignored to the eyes. LED environmental protection light source, diffuse reflection imaging, more than 30,000 hours of service life. soft light, and will not be tired after watching for a long time.  [Multimedia Connection]: Home video projector is fitted for multiple input interfaces, AV interface / USB / TF card socket / power interface. compatible with TV Box, tablet, DVD player, smartphone.  [Portable to Carry] portable projector size is small and weight is light, which is easy to carry and travel. Natural resolution is 640x480P, can support 1080P HD. and it can deliver 20 inches to 100 inches image size.    Plug Type:US Plug,it applies to Canada, India, Mexico, Thailand, the United States, the Philippines,Taiwan and so on.  colour: black  Material: plastic  size: 137x126x56.6mm    Package Contents:  1 x projecter    Only the above package content, other products are not included.  Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.