Seiko Cal. 4520 - 224

Seiko 4520-224

This Automatic model from 1974 features a 38mm Hardlex-Coated Steel case. Powered by the 4520 caliber with 18j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-8679909d77c3]

Also known as: Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
13.4mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Green
Jewels
18j
Frequency
28,800 bph
Power Reserve
42 hours
Year
1974

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