BACtrack - C6 Keychain Breathalyzer - White BT-C655.99Buy!$BestBuy.comDelivery: in USA ReportKeep yourself and friends safe after the party with this BACtrack keychain breathalyzer. It's the size of a 9V battery for easy portability, and it measures blood alcohol concentration when you breath more→e into it. Reliable results from this BACtrack keychain breathalyzer are delivered to your smartphone or other Bluetooth-capable device.
