Watching scary movies in 720p dual audio offers several benefits. Firstly, 720p resolution provides a high-quality viewing experience with clear and crisp visuals. This allows viewers to fully immerse themselves in the movie and appreciate the details of the cinematography. Secondly, dual audio refers to the option of watching the movie with two different audio tracks, often in different languages. This is particularly useful for viewers who prefer to watch movies in their native language or for those who want to practice their language skills.