Seiko Cal. 6661 - 680

Seiko 6661-680

The 6661-680 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-52d2b89f253e]

Also known as: Monster, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
34mm
Case Thickness
10.3mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
40m
Dial Color
Green
Jewels
34j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1971

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