Brightness of 4000 lumens Enjoy a maximally clear and vibrant picture even in daylight and from a distance (in medium to large rooms) Acer ColorBoost3D Reproduce realistic colors and bright images with Acer ColorBoost3D technology. Acer ColorSafe II Enjoy clear and natural colors thanks to ColorSafe II technology, which controls dynamic RGB levels to prevent color degradation. Acer LumiSense Acer LumiSense adjusts image brightness and color saturation based on content. Acer BlueLightShield Protect your eyes from excessive strain by using Acer BlueLightShield technology. Built-in speakers What you hear will have the same great quality as what you see, thanks to powerful built-in speakers.