Seiko Cal. 5278 - 148

Released in 1965, the Cal. 5278 with design code 148 was part of Seiko's domestic market collection. With its 18mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-8841e9cf35dc]

Also known as: Tuna, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1965

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