Seiko Cal. 6689 - 723

The Seiko 6689-723 represents an important milestone in Seiko's 1972 lineup. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-fc7551ac4409]

Also known as: Monster, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1972

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