Seiko Cal. 5240 - 428

Seiko 5240-428

This Quartz model from 1966 features a 36mm Hardlex-Coated Steel case. With its 20mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-3e0d08545b29]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
13.2mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Champagne
Jewels
26j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1966

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