Seiko Cal. 6378 - 522

The Seiko 6378-522 represents an important milestone in Seiko's 1968 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-31da111ac525]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1968

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