Seiko Cal. 6687 - 612

The 6687-612 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6687 caliber with 34j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-4bf2825489e5]

Also known as: Navigator, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

White

Jewels

34j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1983

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