Casio AQ230GA-9D Men's Analog Digital Dual Time Gold Tone Metal Band Watch Imported Dual Time, Daily Alarm 1/100 second digital stopwatch (Measuring capacity: 59'59.99", Measuring modes: Elapsed time) Hourly Time Signal, Auto Calendar, 12/24 Hour Formats Accuracy: +/-30 seconds per month, Battery SR920W,Approx. battery life: 3 years Module 3321, Water Resistant - 30M, Self-Adjustable Metal Band