Seiko Cal. 6331 - 599

This Automatic model from 1973 features a 45mm Stainless Steel case. With its 20mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-7e8ba7fdf173]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1973

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