Seiko Cal. 6640 - 615

The Seiko 6640-615 represents an important milestone in Seiko's 1990 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-db2db4fa91db]

Also known as: Samurai, Navigator

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1990

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