Seiko Cal. 5633 - 421

The Seiko 5633-421 represents an important milestone in Seiko's 1989 lineup. The Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-a72ed0fd213e]

Also known as: Helmet, Bellmatic

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1989

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