Casio G-Shock White and Black Series Analog Digital GA-100BW-1A Men's WatchCasio G Shock White and Black Series Analog Digital GA 100BW 1A GA100BW 1A Men's Watch This is the modern mans watch with all the information he would normally need at his fingertips. Plus, its resistant to magnetism and sudden impacts, so an intelligent choice for professionals both in and outside the lab. The black and white contrast gives it an awesome readability, even at night. It just serves the essential functions of keeping and measuring time