BACtrack's premier professional breathalyzer, the S80 Pro is an ideal choice for law enforcement, health professionals or anyone who requires the most dependable BAC results. It features police-grade XtendA(R) Fuel Cell Sensor Technology with enhanced linear accuracy, and convenient one-button operation for fast and accurate BAC results. Simply press the power button and begin testing in just seconds. The S80 Pro has been tested by, and meets the requirements of, the DOT/NHTSA for a personal breath alcohol screening device. BACtrack S80 Breathalyzer Hard-shell carrying case Mouthpieces x6 AA Batteries x2 Instruction Manual One-year Limited Warranty Dimensions 2.3 x 4.8 x 0.8 inches Weight 4.8 oz (136g) with mouthpiece and batteries Mouthpieces 6 included Battery 2 AA batteries included Battery Life Approximately 1,500 tests Sensor Technology XtendA(R) Electro-chemical fuel cell Sensor Accuracy +/- 0.005 at 0.050% BAC (blood alcohol content) Warm-Up Time 10-20 Seconds Blowing Time 5 seconds Response Time 3 Seconds BAC Range 0.000 - 0.400% BAC Test Count Displays total number of tests performed Warranty 1 Year