Seiko Cal. 6688 - 686

The Seiko 6688-686 represents an important milestone in Seiko's 1988 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-580df9e5bf8a]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1988

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