Seiko Cal. 3871 - 817

The Seiko 3871-817 represents an important milestone in Seiko's 1967 lineup. Powered by the 3871 caliber with 26j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-09de8c3e602c]

Also known as: Tuna, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1967

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