Seiko Cal. 7140 - 121

The 7140-121 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-646a95a658fa]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1984

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