Seiko Cal. 5278 - 378

The Seiko 5278-378 represents an important milestone in Seiko's 1983 lineup. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-f856ae6b5299]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1983

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