Seiko Cal. 5640 - 238

This Solar model from 1977 features a 41mm Gold-Plated case. Powered by the 5640 caliber with 18j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-42c24e251ecc]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1977

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