Seiko Cal. 6688 - 320

The Seiko 6688-320 represents an important milestone in Seiko's 1968 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-8ca595456fa9]

Also known as: Tuna, Goldfeather

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1968

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