Seiko Cal. 6640 - 614

The Seiko 6640-614 represents an important milestone in Seiko's 1968 lineup. It features a Cream dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-29e48abf1959]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Cream

Jewels

17j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1968

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