Seiko Cal. 6641 - 571

Seiko 6641-571

The 6641-571 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6641 caliber with 27j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-c217060bd98f]

Also known as: Emperor

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
9.4mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Black
Jewels
27j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1985

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seikata-wm-c217060bd98f