Seiko Cal. 6637 - 927

The 6637-927 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6637 caliber with 34j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-0bc128c365d0]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1966

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