Seiko Cal. 3878 - 515

This Spring Drive model from 1972 features a 46mm Two-Tone case. Powered by the 3878 caliber with 29j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-ace1b610e16f]

Also known as: Goldfeather, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1972

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