Elisabeth Eda Tanka on Instagram: "Release Date: The initial models, such as the DW-9900-8 and DW-9900MD-2T, were released in April 1999 in Japan. Design Shift: The DW-9900 was designed with smaller dimensions (51.6 x 46.8 x 15.9 mm) to appeal to a wider audience, as the earlier models were considered quite large. Material: Like other Frogman models of that era, it featured a robust, rust-resistant full titanium case and screw back for its construction, covered by a resin bezel. Diving Standards