Seiko Cal. 5634 - 877

This Quartz model from 1990 features a 46mm PVD Black case. Powered by the 5634 caliber with 27j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-fef288784f20]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

46mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1990

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