The T1374631103000 includes multiple useful functions such as dual time zones, day-date, chronograph (stopwatch), alarm, timer, and sometimes a backlight feature. It offers water resistance up to 10 bar (100 m / 330 ft), making it suitable for swimming. https://saicreationswatches.com/products/t1374631103000-t-classic-prx-digital-watch-for-men