Seiko Cal. 6650 - 904

Seiko 6650-904

The 6650-904 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6650 caliber with 29j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-b6a46d947bbf]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
15.6mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
Burgundy
Jewels
29j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1976

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