Seiko Cal. 5640 - 231

This Solar model from 1971 features a 45mm Hardlex-Coated Steel case. With its 19mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-a38ef7a35f11]

Also known as: Panda, Arnie

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1971

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