Seiko Cal. 3870 - 801

This Spring Drive model from 1978 features a 42mm Gold-Plated case. With its 20mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-3fb9ad313bcd]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1978

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