Seiko Cal. 3878 - 428

This Kinetic model from 1990 features a 39mm Titanium case. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-1cb13718ddb3]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1990

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