Seiko Cal. 6639 - 493

The Seiko 6639-493 represents an important milestone in Seiko's 1991 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-6f551cf3c659]

Also known as: Monster, Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1991

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