Seiko Cal. 6640 - 142

The Seiko 6640-142 represents an important milestone in Seiko's 1994 lineup. Powered by the 6640 caliber with 19j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-83917f691199]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1994

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