Seiko Cal. 3878 - 780

This Hand-Winding model from 1972 features a 38mm Two-Tone case. Powered by the 3878 caliber with 19j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-a44576890478]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1972

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