Seiko Cal. 3878 - 428

The Seiko 3878-428 represents an important milestone in Seiko's 1977 lineup. With its 20mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-4d95fc31cfef]

Also known as: Monster, Flighty

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1977

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