Seiko Cal. 5278 - 306

This Spring Drive model from 1988 features a 40mm PVD Black case. With its 18mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-7199d4de5445]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1988

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