The alcohol breath analyzer is a highly sensitive scientific instrument which employs an advanced integated microchip to determine equivalent blood alcohol content. Easy and convenient to use,the led indicators or audible warning inform you accurate slcohol level within senconds.advanced ethanol sensorreliable and stable quick responseshort warmup time:less than 12 secondsno touch healthy designlow battery indication/inexpensiveefficient range:0.025%bacsize:78x40x23mm/weight:30gindication manner of alcohol status:led ,battery:3vdc