Seiko Cal. 3871 - 784

The 3871-784 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3871 caliber with 17j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-2574ae4d0f96]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1997

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