Seiko Cal. 0731 - 581

This Quartz model from 1977 features a 46mm Hardlex-Coated Steel case. Powered by the 0731 caliber with 30j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-e60f4d1e5d2e]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1977

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