Seiko Cal. 6631 - 417

This Quartz model from 1973 features a 35mm Stainless Steel case. It features a Burgundy dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-452072e2d96e]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1973

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