Seiko Cal. 6639 - 826

The 6639-826 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6639 caliber with 17j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-a2812ede2fcf]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1991

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