Seiko Cal. 7143 - 561

The Seiko 7143-561 represents an important milestone in Seiko's 1968 lineup. Powered by the 7143 caliber with 26j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-6e47c494d74b]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1968

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