Seiko Cal. 4446 - 513

Seiko 4446-513

This Hand-Winding model from 1982 features a 43mm Hardlex-Coated Steel case. Powered by the 4446 caliber with 20j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-afb6e97aabe8]

Also known as: Tuna, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
8.3mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
50m
Dial Color
Silver
Jewels
20j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1982

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