An Optional velcro strap in black or grey was made available – these straps connected to the 1st male connection of the bracelet. Luckily for us, The material strap in the IW3715-36 as well as the alternate rubber strap from your IW3548 suit the Aquatimer! 3035 presented a quickset date https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/