The LG UQ70 series, available in sizes 43", 50", and 55", is a 4K UHD Smart TV. Here are some key features that are common in these models:

1. 4K UHD Resolution: Offers a crisp and clear picture with a 3840 x 2160 resolution for an immersive viewing experience.

2. Smart TV Functionality: Powered by LG's webOS platform, which provides access to a wide range of streaming apps such as Netflix, YouTube, Disney+, and more. The TV has built-in Wi-Fi and a simple interface for easy navigation.

3. AI Picture and Sound: These TVs typically feature AI-powered technologies that enhance picture and sound quality by adjusting settings based on content and environment. It can automatically adjust the brightness and color.

4. HDR Support: High Dynamic Range (HDR) support for improved contrast and color accuracy. It is compatible with formats like HDR10 and HLG.

5. ThinQ AI: LG's ThinQ AI allows you to control the TV using voice commands through Alexa, Google Assistant, or the built-in LG Voice Assistant. You can also connect smart home devices to control through the TV.

6. Refresh Rate: Likely features a 60Hz refresh rate, which is adequate for most general viewing and some light gaming, though it may not be ideal for competitive or fast-action gaming (higher refresh rates are preferable there).

7. Multiple HDMI and USB Ports: These TVs come with a variety of ports for connectivity, including HDMI 2.0, USB, and Ethernet, allowing you to connect your gaming consoles, Blu-ray players, and other devices.

8. Sleek Design: With a modern and minimalist design, these models fit well in most living room setups.

The sizes (43", 50", and 55") offer flexibility depending on your space, from smaller rooms to larger living areas.