Seiko Cal. 7142 - 738

The 7142-738 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7142 caliber with 17j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-e22d6c055a00]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1989

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