The Philips 50-inch Smart Roku TV with 4K resolution is a television that combines Philips' hardware with the Roku operating system. Here are some key features and information you might expect from such a TV:

1. Screen Size: As the name suggests, this TV has a 50-inch screen size, which is measured diagonally from corner to corner.

2. Resolution: It supports 4K Ultra HD resolution, which means it has a pixel count of 3840 x 2160 pixels. This results in a highly detailed and crisp picture quality.

3. Smart TV Features: The TV is equipped with Roku's smart TV platform. This means you have access to a wide range of streaming apps and services like Netflix, Hulu, Amazon Prime Video, and many more directly from the TV. Roku is known for its user-friendly interface and vast app library.

4. Connectivity: You can expect standard connectivity options such as HDMI ports, USB ports, and Wi-Fi for internet connectivity. HDMI ports allow you to connect various devices like gaming consoles, Blu-ray players, and soundbars.

5. HDR Support: Many 4K TVs, including Roku TVs, come with support for High Dynamic Range (HDR) content. This allows for improved contrast, color accuracy, and a more vibrant viewing experience when watching HDR content.

6. Voice Control: Some smart TVs, including Roku-based ones, offer voice control features. You can use your voice to search for content, control playback, and even control smart home devices if the TV is integrated with your smart home ecosystem.

7. Remote Control: Typically, these TVs come with a Roku remote control, which has dedicated buttons for popular streaming services and a built-in microphone for voice commands.