Seiko Cal. 4561 - 731

Seiko 4561-731

This Automatic model from 1971 features a 39mm Two-Tone case. Powered by the 4561 caliber with 18j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-ee8a08d73d3a]

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
39mm
Case Thickness
15.1mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
150m
Dial Color
White
Jewels
18j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1971

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