Seiko Cal. 5657 - 227

This Automatic model from 1992 features a 42mm PVD Black case. Powered by the 5657 caliber with 31j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-80be100ee590]

Also known as: Helmet, World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1992

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