The Railroad Approved designation means it's highly accurate and readable - great for any job where accuracy is important. Readable dial with large black numerals 1 through 12 and smaller red numerals for 24 hour (military) time. Day & Date Display Date can be set to display in English or Spanish day names Stainless Steel Case and Bracelet with folding safety clasp 100 Meters water resistant (suitable for swimming, showering or snorkeling) Luminous hand and markers for night-time visibility Overall width of watch, 1 3/8 inches (38 mm) not including setting crown.