An Optional velcro strap in black or grey was provided – these straps hooked up to the very first male connection in the bracelet. The good news is, the fabric strap from your IW3715-36 as well as the alternate rubber strap from your IW3548 suit the Aquatimer! “Swiss Designed” about https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/