Seiko Cal. 6643 - 800

Seiko 6643-800

The 6643-800 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6643 caliber with 24j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-9551ef32eacc]

Also known as: Tuna

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
15.8mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
24j
Frequency
28,800 bph
Power Reserve
67 hours
Year
1980

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