Seiko Cal. 3878 - 771

The Seiko 3878-771 represents an important milestone in Seiko's 1987 lineup. Powered by the 3878 caliber with 36j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-a0b653bf27e0]

Also known as: Sea Horse, Flighty

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1987

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