VIZIO P502ui-B1 50-Inch 4K Ultra HD Smart LED HDTV (240Hz Effective Refresh Rate Version)(Certified Refurbished) This Certified Refurbished product is manufacturer refurbished it shows limited or no wear Includes all original accessories plus a 90-day warranty Superior Ultra HD picture - Experience incredible detail and clarity with over 8 million pixels and 4x the resolution of 1080p Full HD VIZIO Internet Apps Plus - Optimized for Ultra HD streaming, beautifully simple Smart TV delivers instant access to the hottest movies, TV shows, music, and more, Blazing fast 802.11ac wireless - ideal for Ultra HD streaming, 64 Active LED Zones - Dynamically adjusts the LED backlight per zone creating deeper, pure black levels and higher contrast This model has a higher effective refresh rate than its P502ui-B1E derivative version