Seiko Cal. 6378 - 109

The Seiko 6378-109 represents an important milestone in Seiko's 1985 lineup. With its 19mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-d065fb284fc4]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1985

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