Seiko Cal. 4520 - 310

Seiko 4520-310

This Hand-Winding model from 1980 features a 40mm Gold-Plated case. Powered by the 4520 caliber with 24j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-58f0a9a2e5bb]

Also known as: Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
13.4mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
100m
Dial Color
White
Jewels
24j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1980

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