The Optio WG-2 GPS supports a maximum video resolution of 1920 x 1080 pixels. That's over two times the video resolution of a 1280 x 720 pixels digital camera, which is the most common video resolution supported by cameras of this type and age. 1280 x 720 pixels is also supported by this camera. In addition, this Pentax digital camera supports a video resolutions of 640 x 480 pixels. 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 waterproof cameras that are a similar age to the Optio WG-2 GPS.
A 320 x 240 pixels video resolutions is the worst supported video resolution amongst comparable types of camera.