Seiko Cal. 6378 - 256

The Seiko 6378-256 represents an important milestone in Seiko's 1990 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-998f2a6489f3]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1990

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