Seiko Cal. 3831 - 402

This Automatic model from 1984 features a 42mm Titanium case. Powered by the 3831 caliber with 19j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-e6a0fb4acfac]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1984

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