Seiko Cal. 6687 - 826

The 6687-826 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6687 caliber with 21j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-759b65bf19a4]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1975

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