Seiko Cal. 6640 - 490

The Seiko 6640-490 represents an important milestone in Seiko's 1994 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-8dfdc04cc4e8]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1994

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