Seiko Cal. 6664 - 400

The Seiko 6664-400 represents an important milestone in Seiko's 1986 lineup. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-4e33ab345374]

Also known as: Monster, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1986

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