Seiko Cal. 3831 - 521

The Seiko 3831-521 represents an important milestone in Seiko's 1990 lineup. Powered by the 3831 caliber with 32j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-30bad7d7388c]

Also known as: Goldfeather, Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1990

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