Seiko Cal. 3870 - 918

Seiko 3870-918

The 3870-918 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3870 caliber with 23j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-cc1abbe5b929]

Also known as: Monster, Bullhead

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
12.2mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Silver
Jewels
23j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1995

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seikata-wm-cc1abbe5b929