Seiko Cal. 4557 - 201

Seiko 4557-201

This Solar model from 1968 features a 37mm Hardlex-Coated Steel case. Powered by the 4557 caliber with 19j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-086ebd9a7374]

Also known as: Sportsmatic, World Timer

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
8.3mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Black
Jewels
19j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1968

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seikata-wm-086ebd9a7374