Seiko Cal. 6635 - 778

This Spring Drive model from 1987 features a 37mm Gold-Plated case. It features a Navy dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-899a88996725]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1987

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