Seiko Cal. 0728 - 631

This Quartz model from 1972 features a 38mm Titanium case. Powered by the 0728 caliber with 18j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-c7b95bcebcb7]

Also known as: Arnie

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1972

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