Seiko Cal. 3860 - 432

The Seiko 3860-432 represents an important milestone in Seiko's 1978 lineup. Powered by the 3860 caliber with 33j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-46fee2de82e2]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1978

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