Seiko Cal. 3891 - 170

The Seiko 3891-170 represents an important milestone in Seiko's 1980 lineup. Powered by the 3891 caliber with 31j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-404f2278e212]

Also known as: Tuna, Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1980

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