Seiko Cal. 4540 - 520

Seiko 4540-520

This Spring Drive model from 1968 features a 35mm Hardlex-Coated Steel case. With its 22mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-de82d012b0bb]

Also known as: Goldfeather

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
8.6mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Silver
Jewels
22j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1968

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