Seiko Cal. 4481 - 513

Seiko 4481-513

The 4481-513 is a sought-after Hand-Winding piece from Seiko's golden era. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-a8bf2661d3ef]

Also known as: Monster, Sumo

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
13.4mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
140m
Dial Color
White
Jewels
22j
Frequency
21,600 bph
Power Reserve
50 hours
Year
1971

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