An Optional velcro strap in black or gray was available – these straps connected to the primary male connection with the bracelet. The good thing is, the fabric strap within the IW3715-36 as well as the alternate rubber strap in the IW3548 in shape the Aquatimer! The Rolex Submariner was https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/