An Optional velcro strap in black or gray was supplied – these straps hooked up to the primary male connection of your bracelet. The good thing is, the fabric strap within the IW3715-36 plus the alternate rubber strap with the IW3548 suit the Aquatimer! “Swiss Built” over the dial in https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/