Seiko Cal. 5634 - 581

The Seiko 5634-581 represents an important milestone in Seiko's 1987 lineup. Powered by the 5634 caliber with 32j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-20b3794d689a]

Also known as: Sea Horse, Arnie

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

32j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1987

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