Seiko Cal. 5664 - 940

Seiko 5664-940

The 5664-940 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5664 caliber with 24j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-6bfcec88dac3]

Also known as: Turtle, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
38mm
Case Thickness
11.4mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
Navy
Jewels
24j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1980

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