Seiko Cal. 3831 - 376

The 3831-376 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3831 caliber with 30j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-9b6ac2841847]

Also known as: Monster, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1990

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