Seiko Cal. 3877 - 185

The Seiko 3877-185 represents an important milestone in Seiko's 1969 lineup. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-7598deb877c4]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1969

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