Seiko Cal. 5663 - 647

Seiko 5663-647

The 5663-647 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5663 caliber with 21j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-695dbc4b9e54]

Also known as: Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
35mm
Case Thickness
12.4mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
White
Jewels
21j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1965

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seikata-wm-695dbc4b9e54