Seiko Cal. 6640 - 822

This Hand-Winding model from 1988 features a 40mm Gold-Plated case. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-00dee8a93cfa]

Also known as: Goldfeather, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1988

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