Seiko Cal. 3869 - 763

The Seiko 3869-763 represents an important milestone in Seiko's 1969 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-a42eb03cbe30]

Also known as: Sumo, Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1969

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