An Optional velcro strap in black or grey was supplied – these straps attached to the first male link with the bracelet. The good thing is, The material strap from your IW3715-36 plus the alternate rubber strap from the IW3548 in shape the Aquatimer! , Rolex. Always a reputation to https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/