Seiko Cal. 6663 - 643

Seiko 6663-643

Released in 1974, the Cal. 6663 with design code 643 was part of Seiko's domestic market collection. Powered by the 6663 caliber with 17j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-6a3d48cde11d]

Also known as: Baby Tuna, Arnie

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
14.9mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
130m
Dial Color
White
Jewels
17j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1974

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