Seiko Cal. 4439 - 622

Seiko 4439-622

The 4439-622 is a sought-after Hand-Winding piece from Seiko's golden era. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-ec52c853e6df]

Also known as: Tuna, Crown

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
8.5mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Black
Jewels
30j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1984

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