lg 4k

hi i have lg smart 2017 , and i need to connect my headphone is there anyway to add bluetooth option to this TV? like dongle or sth.... what should i search for?

Hi, guys Sorry for my english. I have one question. Recently, i bought a monitor LG 27UK670. I installed the drivers, connected with hdmi (dont know if is 1.2 or greater), and i saw that i run 4k with 30hz. I have Intel Graphics 620 and Nvidia GTX 950M (2gb). Can i run my monitor at 4k with...