Seiko Cal. 5634 - 387

The Seiko 5634-387 represents an important milestone in Seiko's 1991 lineup. It features a Black dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-a345cee55a71]

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1991

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