Seiko Cal. 6640 - 459

The 6640-459 is a sought-after Automatic piece from Seiko's golden era. With its 20mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-ac7773a833a6]

Also known as: Golden Tuna, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1987

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