Seiko Cal. 6378 - 303

The Seiko 6378-303 represents an important milestone in Seiko's 1965 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-b3dcc284874b]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1965

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