Seiko Cal. 7187 - 513

Released in 1976, the Cal. 7187 with design code 513 was part of Seiko's domestic market collection. With its 20mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-663f0ce51fbb]

Also known as: Sumo, Silverwave

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1976

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