Seiko Cal. 6631 - 340

The 6631-340 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Champagne dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-45501a80145a]

Also known as: Rally, Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1990

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