An Optional velcro strap in black or grey was available – these straps attached to the 1st male link on the bracelet. Luckily for us, The material strap within the IW3715-36 as well as the alternate rubber strap from the IW3548 in shape the Aquatimer! Our prices are based upon https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/