GRAND CAYMAN SHOPPING - Ecayonline.com

A quartz watch on the other hand features electronic circuitry that has a limited lifespan.
Quartz
In quartz watches, a specially designed battery activates a quartz crystal inside the movement that vibrates
approximately 33 times per second. These vibrations are then translated into impulses by a computer chip, that
drives an electronic motor.
Quartz watches were not available to the public in any real quantity until the 1970’s. A quartz watch is cheaper
and more accurate than a mechanical watch; a good mechanical watch can typically be made no more accurate
than 2-3 seconds per day, whereas your typical inexpensive quartz is usually good to 0.5 seconds per day or better.
Water Resistance Guide
30m/99ft Does not allow contact with water
50m/165ft Allows for contact with water such as washing hands and rain
50m/165ft - 100m/330ft Allows for light poolside swimming
100m/330ft - 200m/660ft Allows for swimming, snorkeling and showering (do not expose to hot water)
200m/660ft - 500m/1650ft Allows for impact water sports such as board diving and scuba diving
Water Resistance
A watch rated as Water Resistant may come in contact with water to a predetermined extent. Most watches
have a measurement until which the depth of immersion is theoretically safe. It is important to remember that
a water-resistant rating is based upon optimum conditions in a laboratory; real life experience and aging of the
gaskets will effectively decrease the manufacturer’s specifications of water resistance over time.
Most watches you intend to use for swimming should have a screw-down crown. Screw-down crowns are
threaded and screw shut to a matching threaded tube in the case, the crown has a gasket that is compressed
& seals the opening when the crown is tightened - thus ensuring water resistance.
BUYING WATCHES
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