Seiko Cal. 3894 - 289

The 3894-289 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3894 caliber with 29j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-d361414d7dcb]

Also known as: Monster, Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1984

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