Seiko Cal. 5278 - 344

The Seiko 5278-344 represents an important milestone in Seiko's 1970 lineup. Powered by the 5278 caliber with 22j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-73e79e91441f]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1970

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