Seiko Cal. 6390 - 378

The Seiko 6390-378 represents an important milestone in Seiko's 1977 lineup. It features a Cream dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-6051b522c528]

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1977

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