Seiko Cal. 6640 - 521

This Solar model from 1975 features a 42mm PVD Black case. It features a Burgundy dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-5a4384901e2a]

Also known as: Goldfeather, Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

28j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1975

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