Seiko Cal. 0731 - 178

This Automatic model from 1991 features a 42mm Hardlex-Coated Steel case. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-bc868f3c7b4b]

Also known as: Samurai, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1991

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