Seiko Cal. 5688 - 763

The Seiko 5688-763 represents an important milestone in Seiko's 1981 lineup. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-ebc402e13b4b]

Also known as: Shogun, Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1981

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