Have you ever been at a friends house & wondered if theyve been secretly topping you up while your backs been turned Maybe youre feeling merry but youre not sure if its the good company or because youve had one too many In just a few seconds your mind can be put at ease & you can stop yourself from doing anything you might regret in the clear light of day The Breath Analyser Key Chain is a must have for the social butterflies amongst us Warm up the Breath Analyser as explained in the instructions & blow into the breath inlet for 3-5 seconds The LCD graphic display will indicate how inebriated you are whether it be dangerous over 005 BAC unsafe approx 002 BAC or safe under 002 BAC Test youre friends too & the most sober person can do a forfeit Features LCD screen Easy to use just blow into the mouth slot for 3-5 seconds Shows your level of intoxication Requires 2 x AAA batteries not included Size 105 x 43 x 18cm Please note this item should only be used as a guide for fun It is under no circumstances to be used as proof that a person is fit to drive or operate any type of machinery We cannot be held responsible for any misuse or incidents occurring from using this item to judge your sobriety