Seiko Cal. 5278 - 311

The Seiko 5278-311 represents an important milestone in Seiko's 1965 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-a6df472c6bad]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1965

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