Seiko Cal. 3878 - 318

The Seiko 3878-318 represents an important milestone in Seiko's 1969 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-f131b96be4e5]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1969

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