Seiko Cal. 5641 - 655

This Solar model from 1976 features a 39mm Stainless Steel case. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-2cc34db59676]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1976

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