VIZIO E231I-B1 23&rdquo; Class 720p 60Hz Razor LED Smart TV (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty DTS StudioSound Advanced virtual surround sound audio from VIZOs two built-in speakers. Premium App Collection A newly expanded apps library adds to an already unrivaled selection. Built-In Wi-Fi Ultra-fast Wi-Fi provides an easy clutter-free Internet connection. Superior LED technology. VIZIOs Razor LED backlight technology delivers brilliant picture quality as it distributes LEDs across the entire screen for superior light uniformity and picture performance.