The Rollei Add Eye supports a maximum video resolution of 1920 x 1080 pixels. That's over six times the video resolution of a 640 x 480 pixels digital camera, which is the most common video resolution supported by digital cameras of a similar type and age to the Add Eye. 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 resolution is actually the best supported video resolution amongst all waterproof cameras that were released more than two years ago.
Amongst similar types of digital camera the worst supported video resolution is 320 x 240 pixels.