Seiko Cal. 3881 - 390

The 3881-390 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3881 caliber with 31j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-82079246bdbd]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1981

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