Seiko Cal. 5631 - 163

Seiko 5631-163

This Kinetic model from 1970 features a 39mm Titanium case. Powered by the 5631 caliber with 20j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-d46b5b4f9572]

Also known as: World Timer

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
39mm
Case Thickness
8.4mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
60m
Dial Color
Silver
Jewels
20j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1970

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seikata-wm-d46b5b4f9572