Made in USA or Imported Shock Resistant; 200M Water Resistant; Auto LED; World Time; 5 Daily Alarms; 1/100th Sec. Stopwatch Countdown Timer; 12/24 Hr Formats; Mute Function Quartz Movement. Accuracy at normal temperature is ± 15 seconds a month Case Diameter: 51.2mm Water resistant 200m (660ft): in general, suitable for professional marine activity and serious surface water sports, but not diving