Seiko debuted its SUS 4S15 line – of which this serviced 1996 Seiko Ref. SCFF003 automatic is an example - in the early 1990s, after it perceived a disconnect between its offerings and younger consumers, in an attempt to wean the same customers off of digital quartz watches.
 
Seiko set about conducting a series of surveys to gauge the interests of their target demographic, namely individuals between 19 and 22, by placing photographs of Seiko watches from 1913 through the early 1990s – and their overwhelming preference was the minimalist, utilitarian designs from Seiko’s wartime offerings.
 
And from, this the SUS (“Simple” and “Strong”) emerged. The design utilized historical aviation, military, and railroad timepieces that emphasized legibility above all else (important considerations when designing military watches, as well).
 
The SUS line went on to become a popular watch in Japan, and Seiko produced them, with their multiple variants, for eight years, to include automatic, quartz, and kinetic movements. Among these, the 4S15 “Military” variant – released in early 1996 – was by far the most popular. That said, the 4S15 was not actually designed to be a military watch (while the crown doesn’t screw down, it does hack).
 
The 4S15 dial is stark and utilitarian, with white Arabic numerals against a black base (SCFF001) or black Arabic numerals against a silver base (SCFF003) and both feature a short blunt hour hand contrasted with a longer thinner minute hand, aiding in wearer ability to distinguish the two immediately. 
 
Both also benefit from the discrete placement of a date window along the minutes track just below 4 o’clock, with negative impact upon the symmetry of its beautiful design.
 
This Seiko SUS 4S15 comes on a leather rally strap, and with nylon strap, rugged travel case, and springbar tool.