Seiko Cal. 3864 - 668

This Spring Drive model from 1976 features a 44mm PVD Black case. It features a Champagne dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-07eae85970d1]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1976

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