Seiko Cal. 3863 - 643

This Quartz model from 1966 features a 37mm Titanium case. With its 21mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-960acd12df2e]

Also known as: Sumo, Goldfeather

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1966

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