Seiko Cal. 6637 - 409

The 6637-409 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6637 caliber with 36j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-123357fbb3d8]

Also known as: Goldfeather

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1992

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