Seiko Cal. 6637 - 196

This Quartz model from 1989 features a 40mm PVD Black case. Powered by the 6637 caliber with 18j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-a212c7e7533f]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1989

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