Turn on Bluetooth on your smartphone and open the app. Now, follow the instructions in the app and breathe into the mouthpiece. The Philips Sonicare breath analyzer draws an air sample from your mouth and runs it through its internal sensor. This state-of-the-art detection system checks for odor-causing bacteria by-products with accuracy only found in professional dental equipment. Within 30 seconds, the real-time results are sent directly to the Philips Sonicare app on your smartphone via Bluetooth® technology.