The highest video resolution supported by the Add Eye is 1920 x 1080 pixels. That's over two times the video resolution of the most frequently found video resolution of 1280 x 720 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 resolution is actually the best supported video resolution across all waterproof cameras that are a comparable age to the Add Eye.
Across similar types of camera the worst supported video resolution is 320 x 240 pixels.