Seiko Cal. 5640 - 493

Seiko 5640-493

The 5640-493 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5640 caliber with 20j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-a4afef0994dd]

Also known as: Sumo, Navigator

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
38mm
Case Thickness
11.3mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
150m
Dial Color
Champagne
Jewels
20j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1986

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