Seiko Cal. 6631 - 467

This Hand-Winding model from 1978 features a 34mm Hardlex-Coated Steel case. Powered by the 6631 caliber with 32j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-75e0b70b4a20]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

White

Jewels

32j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1978

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