Seiko Cal. 3831 - 120

The Seiko 3831-120 represents an important milestone in Seiko's 1995 lineup. Powered by the 3831 caliber with 32j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-71aa968f22b7]

Also known as: Shogun, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

32j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1995

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