Seiko Cal. 5640 - 606

This Solar model from 1968 features a 41mm Gold-Plated case. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-e239aef80aea]

Also known as: Sumo, Flighty

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

19j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1968

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