Seiko Cal. 4437 - 537

This Kinetic model from 1975 features a 34mm Stainless Steel case. Powered by the 4437 caliber with 31j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-7866efbfc8b1]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1975

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