Seiko Cal. 5278 - 740

This Quartz model from 1977 features a 42mm Two-Tone case. With its 21mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-6d524e31d804]

Also known as: UFO, Sea Horse

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1977

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