Seiko Cal. 6646 - 321

Seiko 6646-321

The 6646-321 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6646 caliber with 25j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-4df9ce0ec7b2]

Also known as: Rally

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
35mm
Case Thickness
10.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
90m
Dial Color
White
Jewels
25j
Frequency
28,800 bph
Power Reserve
68 hours
Year
1986

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