Seiko Cal. 6634 - 450

The Seiko 6634-450 represents an important milestone in Seiko's 1988 lineup. Powered by the 6634 caliber with 21j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-27edce782edb]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1988

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