Seiko Cal. 6631 - 567

The Seiko 6631-567 represents an important milestone in Seiko's 1975 lineup. It features a Green dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-9ee46aa9fefb]

Also known as: Bellmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1975

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