Seiko Cal. 4550 - 183

Seiko 4550-183

This Spring Drive model from 1975 features a 39mm Hardlex-Coated Steel case. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-761f5a74d72f]

Also known as: Bellmatic, Navigator

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
11.4mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
90m
Dial Color
Silver
Jewels
25j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1975

Related Models

seikata-wm-761f5a74d72f