Seiko Cal. 6312 - 664

The Seiko 6312-664 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-4badf5f9dd8f]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1971

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