This Timex training watch sports an array of Ironman-ready features and a durable design. Unique design features an easy-to-use, push-button format. Features 50-lap memory recall and chronograph with lap or split option. Countdown timer includes countdown stop and countdown repeat. Also features 3 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. Tough resin case and top ring are water resistant to 100m 330 ft.. Polyurethane strap offers enhanced ventilation and flexibility for a seamless fit.