Seiko Cal. 3891 - 400

The Seiko 3891-400 represents an important milestone in Seiko's 1985 lineup. With its 22mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-f5fab41dda28]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

19j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1985

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