An Optional velcro strap in black or gray was presented – these straps attached to the first male backlink of the bracelet. Luckily, the fabric strap in the IW3715-36 and also the alternate rubber strap with the IW3548 in shape the Aquatimer! Our estimates are depending on historical product sales https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/