An Optional velcro strap in black or grey was made available – these straps attached to the very first male hyperlink from the bracelet. The good thing is, The material strap in the IW3715-36 plus the alternate rubber strap with the IW3548 fit the Aquatimer! Sited on the former Chapel https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/