Seiko Cal. 5641 - 837

This Quartz model from 1975 features a 36mm Gold-Plated case. With its 21mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-8ca53a93b592]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1975

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