Seiko Cal. 7178 - 181

Released in 1968, the Cal. 7178 with design code 181 was part of Seiko's domestic market collection. With its 22mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-8241aba28dc5]

Also known as: Monster, Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1968

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