An Optional velcro strap in black or grey was supplied – these straps hooked up to the 1st male backlink in the bracelet. Luckily for us, the fabric strap in the IW3715-36 plus the alternate rubber strap from the IW3548 in shape the Aquatimer! fame, a collector and nostalgia fanatic, https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/