Seiko Cal. 6640 - 898

The Seiko 6640-898 represents an important milestone in Seiko's 1991 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-6f3513ab2b3a]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1991

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