Seiko Cal. 6657 - 991

Seiko 6657-991

This Automatic model from 1992 features a 45mm Two-Tone case. It features a Burgundy dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-6dd8a8954cef]

Also known as: Navigator, Arnie

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
45mm
Case Thickness
8.2mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Burgundy
Jewels
31j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1992

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