Seiko Cal. 5663 - 631

Seiko 5663-631

The 5663-631 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5663 caliber with 33j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-d209d176db78]

Also known as: Arnie

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
36mm
Case Thickness
14.1mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Cream
Jewels
33j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1966

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seikata-wm-d209d176db78