The Olympus Stylus Tough TG-835 supports a maximum video resolution of 1920 x 1080 pixels. That's over two times the video resolution of the most frequently found video resolution 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 resolution is actually the best supported video resolution amongst all comparable spec cameras that were launched around the same time as the Stylus Tough TG-835.
Amongst comparable types of camera the worst supported video resolution is 320 x 240 pixels.