BenQ has made improvements all around - from re-designing their color wheel for maximum noise and vibration absorption to creating a smoother airflow that enables exhaust fans to run at lower speeds. The BenQ advantage: sweet silence!MP515 boasts high contrast ratio with 2600:1. High contract ratios translate to razor-sharp detail definition and a broader range of subtle color differences, which makes text is sharper, cleaner, and easy to read and in turn grab audiences attention and interest.A 2500 ANSI lumens projection lamp ensures great viewing even is location with ambient light. MP515 is ideal for small meeting room with under 25 people.