Seiko Cal. 3878 - 518

This Spring Drive model from 1982 features a 46mm Two-Tone case. Powered by the 3878 caliber with 28j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-f3c68aa60b8a]

Also known as: Turtle, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1982

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