An Optional velcro strap in black or gray was offered – these straps connected to the main male link of the bracelet. Luckily, The material strap through the IW3715-36 and the alternate rubber strap in the IW3548 suit the Aquatimer! Our prices are dependant on historic sales and serious-time market https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/