Zero in with LG UltraGear gaming. Meet the next-level of gaming thanks to an ultra-large 48 OLED , low reflection monitor, for a game-changing, immersive experience. Experience lightning quick gaming with less than 1ms (GtG) Response time and 120Hz (O/C 138Hz) refresh rate on a display with brilliant color with a 1,500,000:1 contrast ratio, so gamers willexperience games the way the creators intended. Both NVIDIA G-SYNC compatible and AMD FreeSync Premium compatible. Connect with HDMI 2.1 which provides higher bandwidth than HDMI 2.0 for vivid colors and high-resolution graphics.