Seiko Cal. 6631 - 632

The 6631-632 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6631 caliber with 19j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-6d6cca4306e3]

Also known as: Turtle, Golden Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1979

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