Seiko Cal. 5689 - 381

This Spring Drive model from 1974 features a 39mm Hardlex-Coated Steel case. Powered by the 5689 caliber with 21j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-efe1eb3a809a]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1974

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