Timex Ironman Core 50-Lap Full SizeOptimize your performance and ensure that you're making the most of each and every workout with the Timex Ironman Core 50-Lap Watch. INDIGLO® backlight and large digits for easy readability. Chronograph training log stores workouts by date with Best Lap, Average Lap, and Total Time. 100-hour chronograph with lap and split in large digits. 50-lap memory recall,n-the-go recall of lap and split, 99-lap counter. Total run format/syncro timer maintains total activity time (less pause time during workout) and overall running time. Interval training made easy with two interval timers that can be set up to 24-hours: countdown/stop and countdown/repeat. Automatic interval repetition counter. Three customizable alarms: daily/weekday/weekend/weekly options. Three time zone settings for easy travel. Top push for easy lap and split convenience. Buckle clasp closure. Water resistant up to 100m.