Alcohol Breathalyzer Tester

Great product to keep handy, small and discreet enough to keep as a keychain or in a pocket or handbag.
If you fancy the odd drink on the way back from the office and know your driving, have this alcohol breathalyzer handy to quickly give a blow on to give a rough indication on whether you should be driving or not.
This breathalyzer alerts you of your alcohol blood ratio, which is what the police use to determine whether or not you are in fact over the legal limit.