Seiko Cal. 3877 - 381

The Seiko 3877-381 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-c5fe205b5a1d]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1971

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