Laser Beam Pro is Focus-Free, FDA accessed (# 1611158-000) Class 1 Eye-Safe Laser, which means the projected image from around 3 ft. to 15 ft. away from the screen and diagonal 30 in. to 150 in. of screen size is completely FOCUS FREE. No need to worry about FOCUSING ever again! This projector also supports up to 4K input and 1366 x 768p progressive HD native resolution of output with maximum of 200 Lumens, which provides vibrant colors and soft images on the bright-color wall, ceiling, or projector screen and performs better in a complete dark environment By using Wi-Fi or Hotspot, you can surf the web and enjoy movies straight from Laser Beam Pro. You may use the apps such as YouTube, Netflix, and Amazon Prime TV after Wi-Fi or Hotspot connection is established. Built-in Bluetooth function also lets you connect a variety of other Bluetooth devices, up to 7 different devices such as Bluetooth Speaker, Bluetooth Mouse, Bluetooth Keyboard, and etc. See Product Description for more details on which apps are supported Connect Laser Beam Pro to iOS devices or Android devices wirelessly to share photos or watch your own downloaded videos with your friends and family straight through the projector. Consider using a cable or your own hotspot to video stream. See Product Description for more details on how to connect your mobile devices with Laser Beam Pro