Seiko Cal. 6640 - 722

This Solar model from 1989 features a 38mm Gold-Plated case. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-154df7c930eb]

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1989

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