Seiko Cal. 6687 - 433

Seiko 6687-433

The 6687-433 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6687 caliber with 33j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-d2b701de9d4c]

Also known as: Goldfeather, Arnie

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
15.3mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
50m
Dial Color
Silver
Jewels
33j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1971

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