Seiko Cal. 6687 - 340

The Seiko 6687-340 represents an important milestone in Seiko's 1990 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-29a744d4b4df]

Also known as: Monster, Rally

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

42mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1990

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