Here is a useful gadget for safe driving, the Keychain Breathalyzer with Flashlight. The device operates according to the standard traffic light system – simply blow into the tester and if it’s green you’re safe to go, if it’s yellow you should use caution and if it’s red its time to pocket your keys and call a cab. It is pocket sized and powered by 2 AAA batteries. The breathalyzer comes with a keychain and even an orange LED flashlight, all this at a $5.99 price tag.
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