An Optional velcro strap in black or grey was supplied – these straps hooked up to the main male backlink on the bracelet. The good news is, the fabric strap from your IW3715-36 as well as alternate rubber strap through the IW3548 fit the Aquatimer! The 2020 Rolex Submariner wristwatch https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/