Seiko Cal. 3872 - 164

The Seiko 3872-164 represents an important milestone in Seiko's 1971 lineup. Powered by the 3872 caliber with 25j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-77df08956a35]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1971

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