Seiko Cal. 5688 - 525

This Spring Drive model from 1974 features a 35mm Hardlex-Coated Steel case. Powered by the 5688 caliber with 36j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-138719dc10a1]

Also known as: Golden Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1974

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