Powered by BACtrack's state-of-the-art Xtend® Platinum Fuel Cell Sensor techonology, the BACtrack Trace Professional Breathalyzer delivers reliable and accurate BAC results, with police-grade accuracy. From testing employees in businesses to helping monitor patients in clinics or treatment centers, the Trace is perfect for a variety of professional alcohol sensing applications. And because of its small size and portability, it's also great for personal BAC testing. Help friends and family make better decisions while drinking with the accurate and affordable BACtrack Trace.