Seiko Cal. 3878 - 386

The Seiko 3878-386 represents an important milestone in Seiko's 1979 lineup. Powered by the 3878 caliber with 19j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-427ffd5f0e8b]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1979

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