Seiko Cal. 6657 - 371

Seiko 6657-371

The 6657-371 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-8c4103812145]

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
39mm
Case Thickness
12.0mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
50m
Dial Color
Green
Jewels
22j
Frequency
28,800 bph
Power Reserve
63 hours
Year
1975

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seikata-wm-8c4103812145