Seiko Cal. 6650 - 230

Seiko 6650-230

The 6650-230 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-122b7c06eaec]

Also known as: Monster, Bullhead

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
13.1mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
120m
Dial Color
Cream
Jewels
21j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1971

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