Seiko Cal. 6636 - 253

This Spring Drive model from 1977 features a 38mm Gold-Plated case. With its 20mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-fa1e40a070f7]

Also known as: Rally, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1977

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