Seiko Cal. 6690 - 535

This Quartz model from 1978 features a 45mm Stainless Steel case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-d7e452cce332]

Also known as: Monster, Bellmatic

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1978

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