Seiko Cal. 4577 - 375

Seiko 4577-375

This Solar model from 1979 features a 40mm Hardlex-Coated Steel case. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-16ec7bf5ff83]

Also known as: Sumo, Bullhead

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
10.1mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
60m
Dial Color
White
Jewels
18j
Frequency
28,800 bph
Power Reserve
52 hours
Year
1979

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