Seiko Cal. 4450 - 522

Seiko 4450-522

The 4450-522 is a sought-after Hand-Winding piece from Seiko's golden era. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-10f0da6d5328]

Also known as: Sumo, Tuna

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
46mm
Case Thickness
13.3mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
180m
Dial Color
Champagne
Jewels
32j
Frequency
21,600 bph
Power Reserve
51 hours
Year
1967

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