Seiko Cal. 6660 - 957

Seiko 6660-957

The 6660-957 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6660 caliber with 17j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-c035cea6df5e]

Also known as: Monster, Rally

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
39mm
Case Thickness
12.0mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
120m
Dial Color
Navy
Jewels
17j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1996

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