Seiko Cal. 4418 - 436

Seiko 4418-436

This Automatic model from 1978 features a 37mm Hardlex-Coated Steel case. Powered by the 4418 caliber with 17j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-6ed2a9d8dd8b]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
12.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Black
Jewels
17j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1978

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