Seiko Cal. 6688 - 531

The 6688-531 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-a3ebd82042b4]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1968

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