Seiko Cal. 6688 - 317

The Seiko 6688-317 represents an important milestone in Seiko's 1975 lineup. Powered by the 6688 caliber with 25j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-867e55fe8eb9]

Also known as: Goldfeather, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1975

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