Seiko Cal. 7157 - 471

The 7157-471 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 7157 caliber with 23j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-2d58cd355b5a]

Also known as: Sumo, World Timer

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1987

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