Seiko Cal. 6689 - 400

The Seiko 6689-400 represents an important milestone in Seiko's 1971 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-9edef5ae016e]

Also known as: Monster, Bullhead

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1971

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