Seiko Cal. 3878 - 956

The Seiko 3878-956 represents an important milestone in Seiko's 1993 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-eb0beb0439c6]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

29j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1993

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