Seiko Cal. 6390 - 977

This Spring Drive model from 1969 features a 37mm Two-Tone case. It features a Cream dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-ce092c76bcb2]

Also known as: Bullhead, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1969

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