Seiko Cal. 6644 - 434

This Automatic model from 1978 features a 40mm Stainless Steel case. With its 18mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-94ff21ec062d]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1978

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