Seiko Cal. 3878 - 101

This Automatic model from 1970 features a 46mm Gold-Plated case. With its 21mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-c83b4e93dbd2]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1970

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