It has a projection ratio of 1.5:1, and can reach a 300 inch projection screen at a distance of about 7 meters. Optional distances range from 3.75 feet to 18.75 feet. If this range is exceeded, the projected picture will not be clear or the brightness is too low, thus affecting the viewing effect.By using LED technology and intelligent ecological technology, low-power LED lights have a long service life, can work for 11,000 hours, and do not need to be replaced, so the cost performance is outstanding.The input port supports HDMI, USB, AV, VGA, RJ45, 3.5mm audio, and the cable can support a variety of smart phones, PCS, tablets, PS4, PS5 game consoles, DVD players, Switches, headphones, speakers, etc.