Bertucci Men's 13415 A-4T Vintage 44 Yankee Durable Titanium Field Watch US Patented 44 mm black ION finish solid titanium 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