Seiko Cal. 5690 - 912

This Spring Drive model from 1975 features a 43mm Hardlex-Coated Steel case. Powered by the 5690 caliber with 29j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-88fe1d3e427a]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

29j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1975

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