Seiko Cal. 6640 - 905

This Automatic model from 1985 features a 44mm Hardlex-Coated Steel case. With its 20mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-6982147ce1ea]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1985

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