Seiko Cal. 6331 - 765

This Hand-Winding model from 1976 features a 46mm Stainless Steel case. With its 18mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-f0e2bb5c1cd3]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1976

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