Seiko Cal. 6643 - 700

Seiko 6643-700

The 6643-700 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6643 caliber with 34j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-10ba22fe8bcb]

Also known as: Samurai, World Timer

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
9.1mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Cream
Jewels
34j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1980

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