Seiko Cal. 3874 - 394

Seiko 3874-394

The 3874-394 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3874 caliber with 24j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-9bef084d0e41]

Also known as: Helmet, Sportsmatic

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
9.8mm
Lug Width
19mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Black
Jewels
24j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1999

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seikata-wm-9bef084d0e41