Seiko Cal. 6637 - 439

The 6637-439 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6637 caliber with 21j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-d52ef3c57487]

Also known as: Emperor

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1995

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