Seiko Cal. 6643 - 285

Seiko 6643-285

The 6643-285 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6643 caliber with 19j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-16997afc948f]

Also known as: Turtle, Arnie

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
12.4mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Cream
Jewels
19j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1968

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