Seiko Cal. 6637 - 963

Seiko 6637-963

This Kinetic model from 1987 features a 35mm Hardlex-Coated Steel case. Powered by the 6637 caliber with 21j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-aaecfba79d66]

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
9.5mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
White
Jewels
21j
Frequency
21,600 bph
Power Reserve
69 hours
Year
1987

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