Seiko Cal. 6637 - 449

The Seiko 6637-449 represents an important milestone in Seiko's 1980 lineup. Powered by the 6637 caliber with 28j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-9bb993422578]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

35mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1980

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