Seiko Cal. 6644 - 555

The Seiko 6644-555 represents an important milestone in Seiko's 1975 lineup. With its 20mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-06337c1f70f9]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1975

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