Seiko Cal. 7180 - 187

This Spring Drive model from 1978 features a 39mm Stainless Steel case. With its 21mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-5f54ab0ea4a4]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1978

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