Seiko Cal. 5641 - 666

Seiko 5641-666

The 5641-666 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5641 caliber with 31j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-aac0916e07be]

Also known as: Shogun, Baby Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
45mm
Case Thickness
9.8mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
70m
Dial Color
Champagne
Jewels
31j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1970

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