Seiko Cal. 6640 - 540

This Quartz model from 1999 features a 45mm Stainless Steel case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-76816411ed82]

Also known as: Bullhead, Emperor

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1999

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