Seiko Cal. 7178 - 731

Seiko 7178-731

This Solar model from 1991 features a 46mm PVD Black case. With its 19mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-a53baf62b0ba]

Also known as: Baby Tuna

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
46mm
Case Thickness
12.9mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
White
Jewels
24j
Frequency
28,800 bph
Power Reserve
69 hours
Year
1991

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seikata-wm-a53baf62b0ba