This timepiece is a magnificent artifact from June 1979, as confirmed by the serial number 960064. The SilverWave series is defined by its enhanced water resistance and a breathtaking eggshell white dial featuring hand-applied baton indices that provide a clean, executive look with a sporty edge. It is powered by the legendary Caliber 7546, a high-torque, 4-jewel quartz movement engineered with the same robust architecture as Seiko's professional divers of the era, ensuring surgical precision and "bulletproof" reliability.

The architecture is quintessentially functional, utilizing a brushed stainless steel case with a specialized screw-down crown at the 4 o'clock position to protect the movement from the elements. The dial is a work of high-end JDM art, featuring the iconic SilverWave "tsunami" waves logo at 6 o'clock and a dual Kanji/English day-date wheel, a signature of its exclusive Japanese domestic heritage. Flipping the watch over reveals the crisp engravings and the Suwa Seikosha factory symbol, definitively confirming its authentic Japanese Domestic Market (JDM) pedigree. This is an essential acquisition for an elite collector who appreciates Japanese tool-watch history, the mechanical soul of a high-torque heart, and the bold, shimmering presence of the SilverWave.