Seiko Cal. 5660 - 914

Seiko 5660-914

The 5660-914 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5660 caliber with 24j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-f777140a57d5]

Also known as: Sumo, Rally

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
13.4mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
30m
Dial Color
Navy
Jewels
24j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1979

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