An Optional velcro strap in black or grey was supplied – these straps hooked up to the initial male url on the bracelet. The good news is, The material strap within the IW3715-36 plus the alternate rubber strap with the IW3548 fit the Aquatimer! If the Rolex Submariner ref. 116610LN https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/