An Optional velcro strap in black or gray was offered – these straps attached to the 1st male connection with the bracelet. The good thing is, The material strap from the IW3715-36 and also the alternate rubber strap within the IW3548 healthy the Aquatimer! The 2020 Rolex Submariner wristwatch set https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/