It is a most badest HD tv in a hd tv world.it picture quality is so bad not like hd picture or 4k picture any more.it sound is too hard.it also look not so much well any other one hd smart tv.it picture not clear like other hd picture.it funcitons is not so easy.it internal parts not good like a china parts.it scervicing very chargeble.and where it scervive centure dont know anyone eals.am really face so many problems to purchase this hd tv.it is very expencive hd tv but it worked very poor.it really value of money but dont doing a well job.am not satisfied anymore to purchase this hd tv micromax 50z9999 HD 4k.