Can you be trust a $6 breathalyzer? Good question.

The Keychain Breathalyser with Flashlight is essentially a good product: knowing just how much alcohol you have in your blood is a good idea if you’re thinking of getting behind the wheel. The breath tester doesn’t display an exact result, instead it flashes one of its 3 colored LEDs according to this code: green – safe (under 0.02% BAC – blood alcohol concentration); yellow – caution (0.02% BAC to 0.05% BAC; red and yellow light – danger (over 0.05% BAC).

Now, being able to test yourself on the go is a great idea… but the price is a bit iffy. Do you want to trust your life to a cheap gadget? It could be nice as a “toy” or to get a general idea, but I wouldn’t count on the green to mean “you’re perfectly fine, go ahead”.

How much under $29.99?
A lot: $5.99 on SourcingMap.com.

Via AutoMotoGadgets