#1 RATED SMARTPHONE BREATHALYZER - "Comparing smartphone breathalyzers against the $890 unit used by the California Highway Patrol, only one was spot on with the police-grade model... BACtrack Mobile." - The New York Times ESTIMATE YOUR ALCOHOL LEVEL WITH PRO-GRADE ACCURACY - Powered by BACtrack's patented Xtend Fuel Cell Sensor, BACtrack Mobile utilizes the same professional-grade technology trusted by hospitals, clinics, and even law enforcement KNOW WHEN YOUR BAC WILL RETURN TO 0.00% - BACtrack's innovative ZeroLine technology estimates the time until your BAC is 0.00%, allowing you to make better decisions while drinking CALL AN UBER - Remember, the only safe time to drive is when your BACtrack shows 0.00%. Anything above that? You can call an Uber directly from the App ONE YEAR WARRANTY - If your BACtrack Mobile ceases to function properly during the first year of operation, we will repair or replace the defective product at no charge.