Seiko Cal. 6631 - 537

Seiko 6631-537

This Kinetic model from 1965 features a 44mm Two-Tone case. With its 19mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-66007d3e49c8]

Also known as: Navigator, Sea Horse

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
44mm
Case Thickness
9.1mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
190m
Dial Color
Black
Jewels
28j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1965

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