BoozinGear.com offers a variety of personal and professional grade breathalyzers. These devices estimate a persons blood alcohol level (BAC)from a sample of breath. Each model provides an exact blood alcohol level (BAC) reading to one hundredth of one percent. All of our breathalyzers include a one year manufacturer's warranty. Be able to monitor your level of intoxication with any of these DOT approved breathalyzers today!