Timex Men's Ironman 30-Lap Digital Yellow Resin Watch T5K684 Yellow Resin Quartz Watch 2 mode countdown timers, customizable feature mode, light, and three alarms 30 lap memory chrono 100 Meters / 330 Feet / 10 ATM Water Resistant Case diameter: 39 millimeters, Case Thickness: 12 millimeters, Band width: 19 millimeters