Seiko Cal. 4490 - 634

The Seiko 4490-634 represents an important milestone in Seiko's 1991 lineup. Powered by the 4490 caliber with 35j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-ec756df4d4ea]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1991

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