Seiko Cal. 3827 - 421

Seiko 3827-421

The 3827-421 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3827 caliber with 24j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-c42e6c59d207]

Also known as: Bullhead, Sea Horse

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
37mm
Case Thickness
9.2mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
30m
Dial Color
Cream
Jewels
24j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1965

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