AmbilightYou’ll be immersed in your favourite shows with the Ambilight feature on the Philips 50PUS7855 50″ 4K Ultra HD HDR LED TV with Amazon Alexa. The intelligent LEDs around three sides of the TV project coloured light onto your walls, and reacts to what’s on the screen for even more atmosphere.P5 Perfect Picture and HDRThe clever P5 engine brings depth and detail to your viewing, for images that look more realistic. It keeps the image blur-free and smooth, perfect for sports.HDR technology boosts colour and contrast from frame to frame, so you’ll always enjoy the best possible image.Dolby technologyThe 50PUS7855 makes the most of Dolby technology to improve both sound and images. It supports Dolby Vision for bright colour and contrast, and Dolby Atmos for clear deep sound.Amazon AlexaWith Amazon Alexa built into the TV, you’ll be able to control it using just your voice. ________________________________Please note: Freeview and some apps & services are only available in the UK. Apps & services may be removed or no longer supported by third party content providers at any time. Some apps & services may not be available at launch and may require a firmware update before becoming available.