Seiko Cal. 6631 - 340

Seiko 6631-340

This Kinetic model from 1969 features a 40mm Titanium case. Powered by the 6631 caliber with 27j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-4c3b3d029c8f]

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
40mm
Case Thickness
13.8mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
27j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1969

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seikata-wm-4c3b3d029c8f