Known for rugged reliability and accurate time-keeping, the Timex Ironman watch delivers day-in and day-out. This version features two interval timers for expedited interval training. The chronograph training log stores your workouts by date with best lap, average lap and total time. 100-hour chronograph features lap or split-lap functions. Large memory recalls up to 50 laps and sports a 99-lap counter. Three user-programmable alarms. It can also be set to track two different time zones. Indiglo® night-light technology for readability in low-light conditions. Water-resistant to 100 meters. Case diameter: 43mm. Color: Black/Gray.