Seiko Cal. 7178 - 104

The Seiko 7178-104 represents an important milestone in Seiko's 1987 lineup. With its 18mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-11b24281f2bf]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1987

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