The A-2S Vintageâ„ utilizes our legendary U.S. Patented Uni-bodyâ„ case for unmatched comfort and durability. The 40 mm A-2 case is made from solid stainless steel with a sand blasted super matte finish to create a classic and distinctive look. The A-2S Vintageâ„ is powered by a highly reliable and accurate Swiss made all metal movement. It features hardened mineral glass crystal, 100M water resistance rating, Swiss super luminous hands & markers, rugged screw down crown & back, and our long lasting G-Type Comfort Webbâ„ band. The U.S. Military inspired dial is painstakingly authentic and functional.