An Optional velcro strap in black or grey was offered – these straps hooked up to the first male link with the bracelet. The good thing is, The material strap in the IW3715-36 along with the alternate rubber strap within the IW3548 fit the Aquatimer! Outside of its excellent corrosion https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/