... of service, propaganda video, case introduces, and so on when training. Illustrated show before customer ’s eyes, improve ... big screen movie at homeTourist party:Video, pictures all carry-on along with you, share, fashionable, show individual character ... Focusing lens, manual focusLED Life about 30000hoursContrast 1000:1Projection size 4:3Projection way positive, rear projectorPower consumption 2. ...