Seiko Cal. 3861 - 720

This Spring Drive model from 1982 features a 42mm Hardlex-Coated Steel case. Powered by the 3861 caliber with 29j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-6819089d7adb]

Also known as: Samurai, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1982

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