When choosing an outdoor projector, consider the following key specs:   ·         High brightness (at least 2,000 lumens) for visibility. ·         A contrast ratio of at least 1,000:1 for better image quality. ·         Resolution of at least 1080p (Full HD) for clear detail. ·         Adjustable throw distance and zoom for flexible setup. ·         Sufficient connectivity options (HDMI, VGA, USB). ·         Durability and portability features for outdoor use.