Seiko Cal. 7157 - 431

The Seiko 7157-431 represents an important milestone in Seiko's 1976 lineup. Powered by the 7157 caliber with 21j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-504f3a3aae12]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1976

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