Seiko Cal. 3838 - 689

The Seiko 3838-689 represents an important milestone in Seiko's 1981 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-8fd442fbe54e]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1981

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