Seiko Cal. 6640 - 311

The 6640-311 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-a2d8feee51d3]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1984

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