Seiko Cal. 3868 - 871

The Seiko 3868-871 represents an important milestone in Seiko's 1977 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-66ca9be27322]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1977

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