An Optional velcro strap in black or gray was made available – these straps connected to the very first male url of your bracelet. Thankfully, The material strap with the IW3715-36 plus the alternate rubber strap with the IW3548 suit the Aquatimer! Rolex will make about 1M watches a yr, https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/