An Optional velcro strap in black or grey was offered – these straps attached to the 1st male link from the bracelet. The good news is, the fabric strap in the IW3715-36 plus the alternate rubber strap from your IW3548 in good shape the Aquatimer! Just about every breathtaking design https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/