Seiko Cal. 6689 - 771

The Seiko 6689-771 represents an important milestone in Seiko's 1971 lineup. It features a Navy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-df14d16ff72d]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

35mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1971

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