Seiko Cal. 6231 - 389

The Seiko 6231-389 represents an important milestone in Seiko's 1987 lineup. With its 21mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-c0cd70509438]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1987

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