An Optional velcro strap in black or gray was provided – these straps hooked up to the primary male hyperlink from the bracelet. Thankfully, the fabric strap with the IW3715-36 and the alternate rubber strap within the IW3548 suit the Aquatimer! The Royal Oak celebrates its 50th anniversary this yr https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/