Seiko Cal. 4431 - 571

Seiko 4431-571

This Quartz model from 1991 features a 37mm PVD Black case. Powered by the 4431 caliber with 17j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-c378d0fce008]

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
37mm
Case Thickness
13.5mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
200m
Dial Color
Silver
Jewels
17j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1991

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seikata-wm-c378d0fce008