Seiko Cal. 5637 - 894

This Spring Drive model from 1977 features a 36mm Gold-Plated case. It features a White dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-4967d22cc14c]

Also known as: UFO, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1977

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