An Optional velcro strap in black or gray was made available – these straps attached to the very first male url of the bracelet. Luckily for us, The material strap through the IW3715-36 and the alternate rubber strap within the IW3548 match the Aquatimer! fame, a collector and nostalgia enthusiast, https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/