Seiko Cal. 3878 - 331

The 3878-331 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3878 caliber with 32j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-534d5fc6ce1c]

Also known as: UFO, Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1979

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