New Never used —Compact breathalyzer with Bluetooth connectivity. Ensures accurate BAC readings. Compatible with smartphone apps. Instantly transform your smartphone into a police-grade breathalyzer with the award-winning BACtrack Mobile. Quickly and easily estimate your blood alcohol content (BAC), track your BAC results over time, and with ZeroLine, estimate when your BAC will return to 0.00%. You can even call an Uber™ directly from the App if you've had too much. Features wireless connectivity via Bluetooth, powerful app-enabled BAC tracking tools and is compatible with most iPhone and Android devices. Because of its police-grade fuel cell sensor technology, BACtrack Mobile is ideal for both personal and professional use.