An Optional velcro strap in black or gray was supplied – these straps hooked up to the first male url of the bracelet. Luckily, the fabric strap within the IW3715-36 and also the alternate rubber strap through the IW3548 match the Aquatimer! However it seems to be the component at https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/