Seiko Cal. 5237 - 691

This Kinetic model from 1975 features a 41mm Titanium case. Powered by the 5237 caliber with 35j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-1c14527c2653]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

41mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1975

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