Seiko Cal. 7142 - 105

Released in 1980, the Cal. 7142 with design code 105 was part of Seiko's domestic market collection. Powered by the 7142 caliber with 28j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-10889b2880e2]

Also known as: Sumo, Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1980

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