Seiko Cal. 3859 - 431

The Seiko 3859-431 represents an important milestone in Seiko's 1999 lineup. Powered by the 3859 caliber with 24j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-65de88cf8b99]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1999

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