Seiko Cal. 6689 - 900

This Quartz model from 1975 features a 37mm PVD Black case. It features a Navy dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-7f0933ac1eb6]

Also known as: Monster, Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1975

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