Seiko Cal. 7159 - 109

This Spring Drive model from 1978 features a 40mm Titanium case. Powered by the 7159 caliber with 23j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-6b3440383ed5]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1978

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