Casio Protrek World Time Tough Solar PRW-50Y-1B PRW50Y-1B 100M Mens WatchCasio Protrek World Time Tough Solar PRW 50Y 1B PRW50Y 1B 100M Men's Watch This is one of the Climber Line watches, focused upon offering user friendly operations within a reduced, overall size. Designed for high visibility, it has reduced glare for easy readability and a hefty bezel brings in a rugged mechanical look. Suitable for outdoor wear, even under low and humid temperatures. Sensor aided and uses radio signal for time calibration. A perfect