BACtrack S80 Professional Breathalyzer + 4 sealed Breathalyzer Mouthpieces Bundle. Batteries not included Appears new - comes with everything shown. Powered by BACtrack's largest Xtend Platinum Fuel Cell Sensor, the BACtrack S80 Professional Breathalyzer is the most accurate breathalyzer in the BACtrack family, delivering reliable BAC results, with police-grade accuracy. From being used as an alcohol detector for employees in businesses, to acting as an alcohol tester for patients in clinics or treatment centers, the S80 is perfect for a variety of professional alcohol sensing, detecting and testing applications. And because of its reliability and portable design, it's also great as a personal BAC breathalyzer. Help friends and family make better decisions while drinking with the accurate and affordable BACtrack S80 alcohol Breathalyzer.