Specificationsdisplayscreen Size28 Inchpanel Typeipsbacklight Technologyled Backlightresolution (Max.)3840X2160Brightness (Typ.)300 Nitshdrhdr10Native Contrast1000:1Viewing Angle (L/R) (Cr>=10)178/178Response Times (Gtg)5 Msrefresh Rate (Hz)60 Aspect Ratio16:9 Display Colors1.07 Billion Colors Audiobuilt-In Speaker3Wx2Headphone Jack Yes Powervoltage Rating100 - 240Vpower Supplybuilt-In Gamingfreesyncyes The Ultimate Cinematic Experiencessimply No Compromises. The Ew2880U Is A 4K Entertainment Monitors Featuring An Enormous 28" Ips Panel, Infused With The Latest Hdri Smart Imagery, Top Of Line Trevolo Audio System, And Industry-Leading Eye-Care Technologies To Bring You The Ultimate Gold Class Viewing Experiences.Impeccable Visual Performancethe Exclusive Benq Hdri Technology Is The Next Generation Of Hdr Technology That Refines The Imagery Further By Automatically Sensing The Surrounding Light And Adjusting The Brightness To Offer Both High Dynamic Image Quality & Eye Comfort. Coupled With The Cinema Accurate 90% Dci-P3 Color Gamut And 24P Framerate That Ensures The Most Authentic Cinematic Viewing Experience.