Seiko Cal. 6637 - 891

This Quartz model from 1974 features a 36mm Hardlex-Coated Steel case. Powered by the 6637 caliber with 29j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-c79871a3dbf2]

Also known as: Bellmatic, Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1974

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