Enhanced contrast with rich darkness and brilliant light - High Dynamic Range increases the ratio between the lightest and darkest areas on screen. This brings out a wide spectrum of colors and brilliant contrast for all the visual details. Fine-tuned colors for a vibrant, lifelike picture (PurColor) - Watch films so vivid that it feels like you're there. PurColor produces a wide range of colors with optimal quality for an immersive, true-to-life experience. Samsung Tizen OS - Get more out of your TV with the apps & services on Samsung Tizen OS. Enjoy free live TV channels and thousands of movies with Samsung TV Plus. You can even manage your daily activities with Daily+. Contrast Enhancer - Contrast Enhancer brings flat images to life by adjusting contrast, resulting in deeper depth for outstanding picture quality. OTS Lite (Object Tracking Sound Lite) & Adaptive Sound - 3D surround sound with our virtual top channel audio allows you to be immersed in the audio experience. Adaptive Sound has audio scenic intelligence that optimizes sound based on real-time scene analysis by content type. Samsung Knox Security - Your sensitive data such as pin codes or passwords are protected by multiple layers of software and hardware. Also, Samsung Knox Security secures the home IoT devices connected to your TV and automatically blocks execution of unauthorized malicious apps or access to phishing sites. Lastly, Samsung’s dedicated security team helps keep your TV safe with regular update