Seiko Cal. 6640 - 293

Released in 1965, the Cal. 6640 with design code 293 was part of Seiko's domestic market collection. With its 20mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-2a6cc63fad2a]

Also known as: Golden Tuna, Arnie

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1965

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