Seiko Cal. 4413 - 955

Seiko 4413-955

This Hand-Winding model from 1973 features a 44mm Hardlex-Coated Steel case. Powered by the 4413 caliber with 20j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-6ac18cbd5c9a]

Also known as: Bullhead, Helmet

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
11.8mm
Lug Width
18mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
40m
Dial Color
Black
Jewels
20j
Frequency
28,800 bph
Power Reserve
60 hours
Year
1973

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