Seiko Cal. 3837 - 899

Seiko 3837-899

The 3837-899 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3837 caliber with 31j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-70a2fa5db7af]

Also known as: Monster, UFO

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
14.6mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
40m
Dial Color
Black
Jewels
31j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1992

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