Smoking cessation can be a success with the motivation provided by the BreathCO carbon monoxide monitor * Provides visual proof to the smoker of dangerous CO levels in their lungs * Showing smokers the poison they are carrying in their blood and damage they are doing to their bodies as a result of their habit is an excellent motivator * A great addition to your smoking cessation program * Hand held * Easy-to-read display * Reliable calibration * Inexpensive Hygienic operation * Excellent for therapy