Seiko Cal. 4438 - 961

Seiko 4438-961

The 4438-961 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-d210e0633169]

Also known as: Sumo, Flighty

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
35mm
Case Thickness
15.9mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
130m
Dial Color
Green
Jewels
21j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1981

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seikata-wm-d210e0633169