Seiko Cal. 6621 - 790

This Spring Drive model from 1973 features a 38mm PVD Black case. With its 20mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-626b85f64a23]

Also known as: Sumo, Panda

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1973

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