Seiko Cal. 3878 - 557

The Seiko 3878-557 represents an important milestone in Seiko's 1986 lineup. It features a Black dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-64c12bbca156]

Also known as: Sea Horse, Emperor

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1986

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