Seiko Cal. 3831 - 798

The Seiko 3831-798 represents an important milestone in Seiko's 1999 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-7c2559019610]

Also known as: Tuna, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1999

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