The A-1S is the quintessential field watch featuring a Japanese quartz movement, an offset crown at 4 : 00, a white dial with dark brown hour markers, a red seconds hand, luminous hands and hour markings, a red 24-hour military time scale, a screw down crown, screw-in case back, scratch resistant mineral crystal, patented DX3 case design, and a khaki colored one piece nylon strap. This model is perfect for those who have smaller wrists. Case : Solid stainless steel, 39mm diameter with crown, 36mm without. Band : Nylon strap with buckle closure. 19mm. Water Resistant : 100 meters. Warranty : 3 Years.