Seiko Cal. 3878 - 156

This Hand-Winding model from 1980 features a 42mm Two-Tone case. Powered by the 3878 caliber with 17j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-652b0bb94016]

Also known as: Navigator, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1980

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