Seiko Cal. 0721 - 831

This Quartz model from 1981 features a 44mm Stainless Steel case. Powered by the 0721 caliber with 17j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-0cd832f09b1b]

Also known as: Sea Horse, Emperor

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1981

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