Seiko Cal. 6690 - 887

Seiko 6690-887

The 6690-887 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-4c6f2754f58c]

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
46mm
Case Thickness
8.9mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
140m
Dial Color
Black
Jewels
21j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1970

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