For a direct live display on a TV, an HDMI output is usually the main feature to look for. Many cameras use mini or micro HDMI, so you may need the appropriate cable or adapter to connect to a standard TV HDMI input. This can mirror live view and often image playback on a larger screen.

For computers, HDMI is less straightforward because most laptop HDMI ports are output-only, not input, so you generally can’t plug a camera straight into a laptop screen that way.

If you want viewing on a phone or tablet, built-in Wi‑Fi can be useful, since many Wi‑Fi-enabled cameras can send a live image or transferred photos to a mobile device.

So, the key specs/features to check are:

• HDMI output for direct connection to a TV or monitor
• The specific HDMI port type used by the camera
• Wi‑Fi if you want wireless viewing on mobile devices

Also note that HDMI is mainly for display; it usually does not let you control the camera.