The X (Typ 113) supports a maximum video resolution of 1920 x 1080 pixels. That's over two times the video resolution of the most frequently found video resolutions of 1280 x 720 pixels (which is also supported by this camera). A video resolution of 1920 x 1080 pixels is equivalent to Full HD video. You will require a Full HD TV or better to appreciate this level of detail.
A 1920 x 1080 pixels video resolutions is in fact the best supported video resolution across all digital cameras that are a comparable age to the X (Typ 113).
The worst supported video resolution amongst similar types of digital camera is 320 x 240 pixels.