Mounting type:Wall Mount Operation mode:Manual the screen is built with 160 degree wide viewing angle and 1.2 gain. Portable projector screen is equipped with a convenient auto-locking mechanism, allows you to adjust screen height, roll it up and save space. perfect for home, schools, offices, weddings,or outdoor movie screenings;can be used for powerpoint presentations and other displays. Size: 300 cm x 300 cm