【Innovative Auto Focus and Keystone Correction & Image zoom 50% & 500" Big Display】 Adopts auto-focus and 6D keystone technology, you can get a perfect clear rectangular picture and sharp visuals in 5 seconds after starting up! With the ZOOM function, it can adjust image size from 50% to 100% display using the remote without moving the projector.Viewing the best experience with a wide range of 60-500 inches wherever you are | 【4K Projector & 1100 Ansi with Clear Edge】Redeer projector is the Brightest(1100Ansi)and clearest detailed of 4K projector with WIFI and bluetooth on the market.It adopts the latest 6 layers high Refractive glass lens technology,ensure the screen corners are as clear as the center.Using Germany imported chips and Japanese native light bulbs,you enjoy wider color gamut (up to 90% of NTSC),crisp and detailed images from HD content without downscaling or compressing with protecting your eyes. | 【5G WiFi Connection & Support DNS & Multi-device Connection】The newest 5G Wifi connectivity technology,not only use your phone network to connect,but the same router to screen mirroring. It offers much smoother and lag free online video streaming experience. It is set easily IOS & Android & laptop devices to make them more user-friendly and easily(No Need Cables or Adapters).Support DNS. Support HDMI/VGA/USB/SD/AV/TV input and Audio out, connecting PC, Fire Stick TV,Laptop. | 【5.1 Bidirectional Bluetooth & 10W HiFi Stereo speakers & Advanced Cooling System】The Bluetooth projector includes the function of wireless Bluetooth connection,connect your Bluetooth headsets, Bluetooth speakers, and Airpods.The movie projector built-in dual 10W stereo speakers with SRS, provide clear well-balanced sound quality, a truly amazing sound experience. HD Projector Built-in advanced heat dissipation structure with 3 fans, greatly extend the movie projector lifespan. | 【Presentation via USB& Easily Upgrade System & 3-YEAR WARRANTY】This video projector can play Adobe PDF files Microsoft office directly via USB and view them on the projector.But others only support text format.Short throw projector is updating the software according to client’s request again and again.Redeer Projector 4K Provides 6-Month back and 3-Year repair, lifetime professional technical support. Any problems, please feel free to us know anytime.