Here are some features and specifications you might expect from the Skill Tech 40 inch Smart TV, SK4040S:

1. Display: The 40-inch screen size indicates a moderate-sized display suitable for small to medium-sized rooms. It likely features an LED or LCD panel with a resolution of at least Full HD (1080p) or possibly higher such as 4K UHD.

2. Smart Features: Being a smart TV, it should have built-in Wi-Fi connectivity and a user interface that allows you to access various streaming services, such as Netflix, Amazon Prime Video, Hulu, and more. These TVs typically run on operating systems like Android TV, Tizen (Samsung), WebOS (LG), or proprietary systems developed by the manufacturer.

3. App Store: Smart TVs usually come with an app store where you can download additional applications and games to enhance your viewing experience.

4. Connectivity: Expect multiple HDMI ports for connecting external devices like gaming consoles, Blu-ray players, or cable/satellite boxes. Additionally, USB ports are common for playing media from external storage devices.

5. Audio: While specifics vary, smart TVs typically have built-in speakers. However, for a better audio experience, many users opt to connect external sound systems such as soundbars or home theater systems.

6. Remote Control: Smart TVs often come with a remote control featuring dedicated buttons for quick access to popular apps and settings. Some models also support voice control through either a built-in microphone on the remote or integration with virtual assistants like Amazon Alexa or Google Assistant.

7. Other Features: Depending on the model and manufacturer, additional features such as screen mirroring, Bluetooth connectivity, HDR support, and advanced picture settings may be available.