Seiko Cal. 5636 - 447

The Seiko 5636-447 represents an important milestone in Seiko's 1972 lineup. With its 18mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-5fafed298fd4]

Also known as: Bellmatic, Crown

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1972

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