Energy saving led backlighting high contrast ratios and ultra fast 1ms response time deliver clear vibrant viewing without ghosting or blur the convenient built in speakers provide rich clear sound the 27 inch aoc e2770sh display was designed with speed in mind the ultra fast 1ms response time makes it perfect for passionate gamers as well as anyone who uses graphics animation and film editing applications simply connect your av sources via the modelrsquos d sub dvi or hdmi ports an