Seiko Cal. 6657 - 523

Seiko 6657-523

This Kinetic model from 1993 features a 37mm PVD Black case. Powered by the 6657 caliber with 17j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-7f8d7e3bffb8]

Also known as: Sumo

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
37mm
Case Thickness
10.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
140m
Dial Color
White
Jewels
17j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1993

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