Seiko Dolce 5E31-5B00 Tank Tungsten Carbide Two Tone White Dial

This Seiko Dolce 5E31-5B00, released in 1990, exemplifies the refined elegance of the Dolce line, Seiko’s dress watch collection known for its minimalist yet luxurious designs. The model presents a perfect fusion of classical aesthetics and great materials.

It features a tank-shaped two-tone case with a multifaceted stepped bezel crafted from tungsten carbide, a material prized for its extraordinary hardness (2600Hv)—harder than sapphire, second only to diamond. This not only provides a striking visual presence but also good resistance to scratches. The matching two-tone bracelet complements the case’s geometry, enhancing the watch’s elegant silhouette.

The dial is a crisp enamel white color, highlighted by gold-tone Roman numeral indices and pencil-style hands, delivering a timeless and sophisticated appearance. Protected by a sapphire crystal, the watch remains in excellent condition despite its age over three decades old, with only minor signs of wear on the bracelet fits wrist size of +/- 17cm. The case, crystal, and dial are all clean and well preserved.

Powering the watch is the high-accuracy Seiko 5E31 quartz movement, rated at ±20 seconds per year, reflecting Seiko’s precision watchmaking at the time.

Due to the complex machining process and cost, tungsten carbide watches are rarely produced today, making this Dolce model both a technological achievement and a collector’s piece. With its clean tank design, premium materials, and durability, this 5E31-5B00 is a rare and elegant vintage dress watch that stands the test of time.