Seiko Cal. 3846 - 987

This Spring Drive model from 1981 features a 34mm Gold-Plated case. Powered by the 3846 caliber with 28j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-c434b7dd5c68]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1981

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