IWC IW3536-03 description
The IWC Aquatimer 3536 was introduced in 1998 as the dive watch of the sporty GST collection. It marked the return of the Aquatimer name, which IWC had first used for its divers watches in the late sixties. The 3536 featured a case of 42mm in either titanium or stainless steel with an external revolving bezel. It is paired with an integrated bracelet or an optional velcro strap, although rubber straps of the later generation also fit. Depending on the year of production this watch is powered by either the 30110 or 37524.
Reference IW3536-03 has a Stainless Steel case and a Black dial.
The reference for the velcro strap with stainless steel lugs is A04925.