An Optional velcro strap in black or grey was supplied – these straps attached to the very first male link from the bracelet. Luckily for us, The material strap with the IW3715-36 and the alternate rubber strap from the IW3548 suit the Aquatimer! Sited on the previous Chapel Court Back https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/