Seiko Cal. 5237 - 397

This Spring Drive model from 1976 features a 43mm Titanium case. Powered by the 5237 caliber with 26j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-6c0e07e7f8fc]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Burgundy

Jewels

26j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1976

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