Seiko Pilot's Flight SNA411P1-VAR-LS17 Quartz Chronograph 200M Men's Watch Present in the mix is a whole lot of functionalities and capabilities, all put within a great, quality build. The Pilot watch is a critical tool for professionals, it gives you the ability to calculate various equations and take multiple measurements in matters of fuel, speeds and distances. You may also do basic math like multiplication and division; however, it’s chiefly used to estimate flight climbs and time of arrival.