Seiko Cal. 5645 - 640

This Solar model from 1965 features a 44mm Gold-Plated case. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-71679c087729]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1965

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