This Timex training watch has Ironman-ready features and a sleek, aerodynamic design. Unique design features an easy-to-use, push-button format. Training log stores workouts by date, including best lap, average lap and total segment time. Features 50-lap memory recall, 100 hr. chronograph with lap or split option and interval repetition counter. Countdown timer includes countdown stop and countdown repeat. Three programmable audible alarms with 5 min. back-up alarm and on/off hourly chime. INDIGLO night-light illuminates the display for easy use at night. Linked timers for speed workouts and walk/run marathons walk 1 min./run 8 min.. Tough resin case and top ring are water-resistant to 100m 330 ft.. Polyurethane strap offers enhanced ventilation and flexibility for a seamless fit.