Seiko Cal. 6640 - 554

Seiko 6640-554

This Kinetic model from 1972 features a 37mm Hardlex-Coated Steel case. Powered by the 6640 caliber with 22j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-5e3792cc7a59]

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
8.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Black
Jewels
22j
Frequency
36,000 bph
Power Reserve
63 hours
Year
1972

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