Seiko Cal. 4439 - 366

Seiko 4439-366

The 4439-366 is a sought-after Solar piece from Seiko's golden era. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-6b0d25fa9010]

Also known as: Sumo, Sportsmatic

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
44mm
Case Thickness
9.2mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
70m
Dial Color
Cream
Jewels
28j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1966

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