Seiko Cal. 5637 - 732

This Spring Drive model from 1987 features a 34mm Two-Tone case. Powered by the 5637 caliber with 20j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-f7f598edc43e]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1987

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