The Rollei AddEye supports a maximum video resolution of 1920 x 1080 pixels. That's over two times the video resolution of a 1280 x 720 pixels camera, which is the most common video resolution supported by waterproof cameras that have been available for around the same time as the AddEye. 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 actually the best supported video resolution amongst all cameras of this age and type.
A 320 x 240 pixels video resolutions is the worst supported video resolution across comparable types of digital camera.