Seiko Cal. 6640 - 469

The Seiko 6640-469 represents an important milestone in Seiko's 1993 lineup. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-e11375db6348]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1993

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