The compact BACtrack Mobile Pro turns your smartphone into a professional alcohol tester. Thanks to the high-quality Xtend Fuel Cell sensor, you get precise measurement results. Determine your blood alcohol concentration quickly and reliably at any time, even on the move. The ZeroLine function also determines when you will be sober again. With the help of the available app for Android (from Android 4.3) and iOS (from iOS 8) you can record your measured values and track them over longer periods of time. The BACtrack Mobile Pro is small enough to fit in any pocket. So you can immediately and precisely determine your blood alcohol concentration anytime and anywhere, and then decide whether you just drink water or leave your car keys to someone else. The BACtrack app lets you perform a self-assessment before displaying the measurement result. So you can check at any time how well you can estimate your alcohol level. The app also allows you to save personal notes and photos with your measurement results. So you can record what you drank and ate, who you were with and how you felt. The result is personalized records of your drinking habits that make the measurement even more meaningful. Thanks to the wireless Bluetooth connection, the BACtrack Mobile Pro is very convenient to use. Without a cable connection, you can hold the breathalyzer independently of the smartphone. During use, you can easily follow the instructions on your smartphone's display and read the result immediately after the measurement. The ZeroLine function even shows you an estimated time when you will be completely sober again. The Alcohol Tester can be seamlessly integrated with Apple Health to analyze relationships between your alcohol consumption, sleeping habits and physical activity. The device is also compatible with the Apple Watch: Read the measurement result comfortably from your wrist.