An Optional velcro strap in black or grey was provided – these straps attached to the first male connection of the bracelet. Luckily, The material strap within the IW3715-36 along with the alternate rubber strap through the IW3548 match the Aquatimer! The 2020 Rolex Submariner wristwatch set the world wide https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/