An Optional velcro strap in black or grey was made available – these straps hooked up to the initial male connection with the bracelet. The good news is, The material strap within the IW3715-36 and the alternate rubber strap in the IW3548 match the Aquatimer! About Superwatchman Superwatchman.com strives to https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/