Smooth Auto-Lock Mechanism - New added self locking design, the electric projector screen can be fixed at the length you want at any time. The ultra-quiet motor drop down and roll up the screen smoothly without jamming and has a long service life. Rolling storage, reduce wrinkle generation. The electric drop down projector screen with wired and wireless remote controls help to adapt to different conditions, drop and risen with one click. Multi-scenes Application - 4:3 aspect ratio, screen size: 93.7x70.87 rectangle, 120" diagonal length. This motorized projector screen is a must-have for home theater, school, business office,wedding. The movie screen with 4K high-definition image quality, you can enjoy the feeling of a large movie theater. Just with a power supply and a fixed place for installation, you can also watch movies with family and friends on outdoors nights through this outdoor projector screen. Dual Wall/Ceiling Mounted - Our automatic projector sc