Seiko Cal. 6640 - 495

The Seiko 6640-495 represents an important milestone in Seiko's 1991 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-0378d8d78c3f]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1991

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