The DRIVESAFE™ exec personal breathalyser combines both portability and accuracy. Developed with a fuel cell sensor, the DRIVESAFE™ exec guarantees fast results and high-quality sampling. Its lightweight design makes it easy to carry anywhere. Each DRIVESAFE™ exec breathalyser comes fully equipped with 2 AA alkaline batteries, an instruction manual, a protective carry case and 5 mouthpieces. 1 year warranty is offered to ensure that your device is taken care of. DOT certified breathalyser. Industry trusted electrochemical sensor provides you with accurate test results every time. Portable so you carry it around wherever you go. One button operation so it is easy to use. Displays a calibration reminder for your convenience. You will only need to calibrate once a year.