Brightness of 4000 lumens Enjoy a maximally clear and vibrant image even in daylight and from a distance (in medium to large rooms) thanks to the brightness of 4000 lumens. Acer ColorBoost3D ™ Experience realistic color reproduction and brilliant bright images with Acer ColorBoost3D ™ technology. Acer ColorSafe II Enjoy clear, natural colors with ColorSafe II technology, which controls dynamic RGB levels to prevent color degradation. Acer LumiSense ™ Acer LumiSense ™ adjusts image brightness and color saturation based on the content you are viewing. Acer BlueLightShield ™ Protect your eyes from excessive strain by using Acer BlueLightShield ™ technology.