Seiko Cal. 5660 - 509

Seiko 5660-509

The 5660-509 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5660 caliber with 33j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-0cfd64386d81]

Also known as: Tuna, Flighty

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
41mm
Case Thickness
15.2mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
80m
Dial Color
Black
Jewels
33j
Frequency
36,000 bph
Power Reserve
59 hours
Year
1994

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