Seiko Cal. 6640 - 100

Seiko 6640-100

The 6640-100 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6640 caliber with 20j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-b254af0c98bb]

Also known as: Panda, Golden Tuna

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
8.1mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
80m
Dial Color
Champagne
Jewels
20j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1999

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