The A-1S is the definition of rugged simplicity. A watch ready for the day to day challenges that come your way. The top quality solid stainless steel case features 100 M water-resistance, an ergonomically placed screw-down crown at the 4 o'clock position, and a screw down case back. The US Patented DX3 case features a recessed and scratch resistant mineral glass crystal, and a heavy duty band attaching method that will withstand vigorous activity year after year. The black water-proof Duration leather band is Made in the USA and is unmatched in the marketplace for comfort and long lasting durability, featuring stainless hardware and box stitch construction. The white dial includes 12/24 time and luminescent hands/markings.