Seiko Cal. 3878 - 424

The Seiko 3878-424 represents an important milestone in Seiko's 1986 lineup. Powered by the 3878 caliber with 25j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-b508980c9ff8]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1986

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