Seiko Cal. 6640 - 660

This Quartz model from 1999 features a 44mm PVD Black case. Powered by the 6640 caliber with 28j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-0218ee2d1d37]

Also known as: Arnie

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1999

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