Seiko Cal. 3830 - 620

Seiko 3830-620

The 3830-620 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3830 caliber with 34j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-a2fed956f544]

Also known as: Monster, Bullhead

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
39mm
Case Thickness
15.8mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Champagne
Jewels
34j
Frequency
28,800 bph
Power Reserve
46 hours
Year
1985

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