Seiko Cal. 3878 - 989

This Kinetic model from 1978 features a 37mm Stainless Steel case. Powered by the 3878 caliber with 27j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-5a0455b30657]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1978

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