Seiko Cal. 6623 - 731

This Solar model from 1965 features a 36mm Gold-Plated case. With its 21mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-69c3401180c6]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Champagne

Jewels

24j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1965

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