Seiko Cal. 6644 - 303

This Spring Drive model from 1997 features a 43mm Titanium case. With its 19mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-9677a2eef6d6]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1997

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