SPECSTAR 120 Inch Auto-locking Portable Projection Screen Have you ever imagined that you can enjoy a privately-made IMAX movie screen viewing or a 3D visual experience without leaving home? SPECSTAR s auto-locking portable projection screen turns your living room into a movie theater in seconds. Let?s bring the screen back! Premium Material Durable black PVC backing material eliminates the penetration of light maintaining a clear and vivid picture; Metal casing reduces the risk of deformation and damage whether in transportation or use;White plastic material with a 3-layer composite structure allows the surface to be smooth and flat. Auto-Locking System Ensure the screen can stay anywhere in the drop-down; Pull the manual control tab twice and the screen will roll up automatically. Smooth Lifting Process High-purity lubricating oil in the screen shaft allows the running noise lower than 45 decibels. Easy To Maintain Generally use a dry rag to wipe off the dust. Visual Feast The screen supports 3D 1080P