Breathalyzer Keychain Car Gadget - Flashlight + Stopwatch. New mini-breathalyzer that fits right on your keychain! Never again have a doubt about how much alcohol you have had to drink or whether you or your friend is legally OK to drive. This mini breathalyzer has a traffic light readout style system making it super easy use. Simply blow for 5 seconds then wait. A green indicating light and you are good to go yellow and you may want to wait a while before you go home while red indicates you should hand your keys to a friend. This is great reference tool for seeing if you have had just a little too much to drink. Chinavasion offers this car safety device with a factory-direct wholesale price¸ so buy in bulk now and watch your reselling profits soar! At a Glance... Breathalyzer Keychain High Accuracy LCD Display .