Seiko Cal. 3878 - 305

The Seiko 3878-305 represents an important milestone in Seiko's 1989 lineup. It features a Black dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-885f782d85de]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1989

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