Seiko Cal. 7140 - 311

The Seiko 7140-311 represents an important milestone in Seiko's 1998 lineup. With its 18mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-1caa876bd5c5]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1998

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