Seiko Cal. 6687 - 190

The Seiko 6687-190 represents an important milestone in Seiko's 1970 lineup. It features a Green dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-e5894358625a]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1970

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