An Optional velcro strap in black or gray was provided – these straps attached to the primary male website link of the bracelet. Luckily for us, the fabric strap in the IW3715-36 as well as alternate rubber strap within the IW3548 match the Aquatimer! “Swiss Built” about the dial from https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/