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...PPT Playing Giant Screen Highlights: 500-inch huge screen, real giant screen experience 30,000 hours of ultra-long light source life 5,000,000:1 dynamic contrast ratio Low noise and clean, enjoy the original...
..., fast forward playback, page turning PPT, scrolling excel tables, etc., so as to reduce the running back and forth of speakers and improve the conerence efficient. Product Specifications: Wired connection H...