Seiko Cal. 3891 - 535

The Seiko 3891-535 represents an important milestone in Seiko's 1981 lineup. Powered by the 3891 caliber with 17j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-6e35b750d41c]

Also known as: Tuna, Bullhead

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Cream

Jewels

17j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1981

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