No need to understand complicated tide tables as these will give approximate times for high and low tides. All ages will like the dial graphics, including art from Guy Harvey. Kids and adults will love these as gifts as they learn about the ocean's ebb and flow along with lunar influences. Keep track of the tides and time in these convenient and budget priced clocks. Stylish designs cover the faces of these pieces as well as colorful ways to tell the hour up to the last minute.