Bertucci Men's 17006 D-1T Vintage Durable Titanium Field Watch US Patented 42 mm sand blasted matte finish solid titanium vintage tonneau case offers extreme durability and lightweight comfort US patented two ply nylon Bertucci band offers unmatched durability and comfort. Manufactured using box stitch construction and all metal hardware and grommets Scratch resistant hardened mineral glass crystal Ergonomically offset at 4 o'clock screw down crown. Rugged screw down case back Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving