The H7550BD has a maximum resolution of 1080p (1920x1080). That's over two times the resolution of the most common native projector resolution of XGA (1024x768). Across all projectors of this age and type the worst resolution is nHD (640x360) and the best is DCI 4K (4096 x 2160).
We think you might also be interested in some of the other multimedia projectors that have a resolution of 1080p (1920x1080) currently available including the Benq HC1200 ($1,965.28), or the Epson Home Cinema 3000 ($499.00) which has a better Rating.
If you would prefer a multimedia projector with a higher resolution then you might want to consider the Epson EB-Z9875U (WUXGA (1920x1200)), the Benq SU917 ($2,274.65) (WUXGA (1920x1200)), or the Barco CNWU-81B (WUXGA (1920x1200)).