Seiko Cal. 3871 - 446

The 3871-446 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3871 caliber with 31j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-2351c16f1d62]

Also known as: UFO, Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

31j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1982

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