Casio #AW48H-7EV Men's Dual Time Zone Analog Digital Watch 50M Water Resistant, Dual Time, Daily Alarm 1/100 second digital stopwatch, Hourly Time Signal Auto Calendar, 12/24 Hour Formats, Accuracy: +/-30 seconds per month Battery SR920W, Approx. battery life: 3 years, Module 3321 Size of case / total weight: 31.5 x 29.5 x 8.5mm / 27g