Can test the car battery or alternator automatically and in this way to alarm the driver before the battery or alternator does not work
It can release the energized air-ion, which can clean the air in the car
It can both save the fuel and reduce the emissions, which has a more effective function for the old cars and the cars that have not replaced the batteries for a long time
How to install and uses: just plug the terminal of the unit into your car's cigar-lighter socket and it will work in a few seconds
It will work like a body-guard to your car and when it stop working, your car will get back to its original condition and nothing is affected
Safe to use: it is powered by DC (direct current) from your car's battery, so it contains no radioactive or magnetic waves at all
Only device run by AC (alternating current) like your house electronic devices will emit harmful waves to human body
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