Haier?s 55DA5550 55 in. 1080p LED HDTV features a sharp, clear, high-definition picture with the signature slim design of direct backlight LED. The 120Hz Full Motion refresh rate, which reduces blurring during fast-action scenes, complements a 1/2 in. Ultra-Thin frame making for a virtually edgeless display that delivers a more detailed, immersive viewing experience than ever. A 2.1 channel speaker system provides intense audio for your home theater by combining the richer sound texture and louder, cleaner bass of two dedicated sound chambers with the added effects of a separate built-in subwoofer. This line is also MHL (Mobile High-Definition Link) enabled and Roku Ready, allowing you to connect compatible devices, such as Smartphone, tablets and the Roku Streaming Stick directly to the HDMI port on your HDTV. Adding a Roku Streaming Stick instantly delivers smart TV applications, including access to over 1000 channels, Netflix, Hulu Plus, Crackle and more.