The S80, BACtrack's first professional breath alcohol analyzer, is the ideal choice for law enforcement agencies, healthcare professionals, or anyone who needs the most reliable BAC results. It features professional Xtend fuel cell sensor technology with enhanced linear accuracy and convenient one-button operation for quick and accurate BAC results. Simply press the power button and start the test in seconds. Six mouthpieces included. Battery life: approximately 1,500 tests. Sensor accuracy: +/- 0.005 at 0.050% BAC (blood alcohol content). Warm-up time: 10-20 seconds. Blow time: 5 seconds. Reaction time: 3 seconds. BAC range: 0.000 - 0.400% BAC. The test count displays the total number of tests conducted.