Seiko Cal. 6378 - 789

This Solar model from 1965 features a 42mm PVD Black case. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-d1f2c4c409d0]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1965

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