Timex Midsize T5K221 Ironman 50-Lap Resin Strap Digital Watch Quartz movement Easy to use 24-hour countdown timer with: countdown/stop (CS) and countdown repeat (CR) 100-hour chronograph with lap or split option, 50-lap memory recall for effortless review after workout, 99-lap counter Indiglo night-light and NIGHT-MODE feature Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving