21.5in screen size with 1920x1080 resolution provides a native display of a Full HD video sources without any degradation due to down-sampling technologies 1920 x 1080 maximum resolution for a vivid, crystal clear display with added productivity Furnishes captivating visuals with 250 Nit brightness levels 21.5in viewable screen size provides a spectacular viewing experience 60 Hz standard refresh rate reduces deterioration caused by blurring to ensure maximum productivity 100,000,000:1 contrast ratio for clear and sharp viewing 16:9 widescreen resolution perfect for watching movies, playing video games and getting on with office work 5 ms response time makes it excellent for latest action films, sports or gaming LED backlight technology offers visual brilliance with maximum efficiency Is power-efficient with minimal heat production to ensure a prolonged, convenient usage EPEAT Gold certified - reduced environmental impact from multiple eco-attributes. Ranked in three tiers: Bronze, Silver or Gold. ENERGY STAR certified - meets federal guidelines for energy efficiency. Energy efficient - designed to use less energy than alternative products, potentially helping you save money and reduce your carbon footprint.