Stainless Steel Case and Bracelet Bracelet features a folding safety clasp 1/20 Chronograph Measures up to 60 Minutes 12/24 Hour Time Dual Time Alarm (24 hour) Perpetual calendar automatically adjusts the date for odd and even months and leap year through the year 2100 - no need to reset the date at the end of some months. One Way Rotating Elapsed Time Bezel Water resistant to 200 Meters, Part of the Professional Diver Series Luminous hands, markers for night-time visibility Screw-In Case Back 44mm Case Width (about 1.7 inches)