Casio Digital Black Case Watch W-737H-1AVDFCasio Digital Black Case Watch W 737H 1AVDF A watch with style and functionality, plus an extra long band for a more comfortable fit. The front button makes it simple to access the LED backlight, so you can easily read the dial in dark places. These watches also come with handy everyday features like a stopwatch, alarm, timer, calendar, and dual time functions, not to mention water resistance up to 100 meters and a 10 year battery you wont have to