An Optional velcro strap in black or grey was presented – these straps connected to the first male link of the bracelet. The good news is, The material strap with the IW3715-36 plus the alternate rubber strap within the IW3548 fit the Aquatimer! There exists a splendidly special double index https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/