Seiko Cal. 3891 - 505

The Seiko 3891-505 represents an important milestone in Seiko's 1981 lineup. Powered by the 3891 caliber with 21j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-b2b91e527565]

Also known as: Shogun, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1981

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