【Important】: For installation, the projector screen measures around 250*160cm (W x H) in total, with a white display area of around 221.5*125cm (W x H) and a 16:9 aspect ratio; For the best viewing experience position the screen 3-3.5m away from the seating area (this may vary depending on your setup and preferences) 【Motor System】- Energy efficient, quiet (<42dB) motor that enhances longevity. Control system: long distance radio frequency remote & wall mountable control panel 【Premium PVC Matte White Screen】178 degree large viewing angle provides a large viewing area; 1.2 gain Matte white screen is yellow-staining-free, wrinkle-free, and providing outstanding image reproduction. 【Fast Installation & Easy Cleaning】- Arrives fully assembled, plug and play ready. This motorized projector screen is suitable for both wall mounting and ceiling mounting.This projector screen is easy to wipe and clean with soap and water. 【A Versatile Viewing Experience】 Perfect for home, schools, offices, weddings, church, or outdoor movie screenings; can be used for PowerPoint presentations and other displays. Attention: A 23V 12A battery needs to be installed (not included)