Seiko Cal. 6623 - 763

This Spring Drive model from 1983 features a 39mm Hardlex-Coated Steel case. With its 20mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-23cd72872682]

Also known as: Turtle, Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1983

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