Test breath samples with professional-grade accuracy using the BACtrack Trace breathalyser. Featuring Xtend Fuel Cell Sensor Technology and a miniature solenoid air pump, the Trace quickly and effectively analyzes blood alcohol content, and displays precise results in seconds. Its built-in memory saves your last 10 readings to help you keep track. | BACtrack Trace Professional Breathalyzer (BT-P3-I)