Seiko Cal. 3831 - 305

The Seiko 3831-305 represents an important milestone in Seiko's 1991 lineup. Powered by the 3831 caliber with 33j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-8b74783d5342]

Also known as: Bullhead, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1991

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