There is a liquid, mirror-like quality to the way the edge-to-edge crystal meets the skin, feeling remarkably like a cooling drop of Mercury resting on the pulse. The transition from the smoke-tinted glass to the polished steel is nearly imperceptible, creating a seamless horizontal plane that catches every stray beam of light. Its weight is deceptively light; at only 5mm thick, it doesn’t so much sit on the wrist as it becomes part of its natural contour, disappearing beneath a shirt cuff until the light hits the silvered dial.

The 7732-5150 is a physical record of Seiko’s high-design period in the 1980s, an era when they sought to merge industrial brutalism with a sleek, futuristic silhouette. By utilizing the 7732 quartz caliber, the Suwa engineers were able to achieve a profile that challenged the technical limits of the decade, allowing for an incredibly wide 17mm bracelet integration on a modest 25mm case. This structural choice gives the watch a bold, cuff-like presence that feels anchored and intentional. Preserved with its original box, it stands as a pristine artifact of Japanese minimalism—where time is housed within a fortress of steel and obsidian glass.

Technical Summary

Case width: 25 mm
Lug to lug: 34 mm
Lug/Bracelet width: 17 mm
Max wrist size: 21 cm
Case material: Polished Stainless Steel
Dial: Sunray Moonlight Silver with Applied Indices
Crystal: Edge-to-Edge Hardlex Mineral
Movement: Japan Quartz (Cal. 7732)
Production era: Circa 1980s
Condition: Very Good Condition