Seiko Cal. 3877 - 441

This Automatic model from 1971 features a 37mm Gold-Plated case. Powered by the 3877 caliber with 32j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-87f6bef964e4]

Also known as: Sumo, Emperor

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1971

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