Seiko Cal. 6686 - 639

The 6686-639 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6686 caliber with 34j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-5196badc2bdc]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1991

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