Seiko Cal. 4577 - 644

Seiko 4577-644

This Kinetic model from 1975 features a 41mm Two-Tone case. With its 21mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-ef205e7bf813]

Also known as: Monster

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
41mm
Case Thickness
10.1mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
180m
Dial Color
Cream
Jewels
25j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1975

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