Bad breath would make people uncomfortable, especially staying together with girlfriends or boyfriends face to face, how to avoid the embarrassing scene? You should try this fragrance tester! It will help you know your mouth odor! The odor tester is specially designed to check people's breath quality. You can try. Use: Open the battery case, insert 2*AA batteries and close the case. Press the POWER button, a 9 second countdown will be displayed. Then the display will flash "C", and now you can exhale evenly 3 seconds into the air inlet. After one beep, it will display the result, the result will display 5 seconds, and it will turn off automatically. If you want to test again, just press the power button again. Characteristics: Advanced solid state sensor which with excellent sensitivity and fast response, simple and convenient to use. It will show the final test result in digital and cartoon mode, anyone can check themselves with this tester. Score 5 levels: Very Good, Normal, Not Good, Bad, Very Bad. Digital LCD display and cartoons with orange backlight, save energy and environmental protection with soothing colors and won't hurt your eyes. Fast response and resume, with self-monitoring to show different conditions. Portable design, small size with compact structure, easy to put in your pocket and carry with you. Non-contact design, exhale 5-10mm away from the detector, more hygiene. Battery-saving design, low battery indicator, 2 AAA batteries for long working time (battery not included). Technical data: Sensor type: semiconductor sensor Warm-up time: 9s Blowing time: 5s Working environment: relative humidity: 95% no dew Item Size: 95 * 36 * 18mm / 3.74 * 1.42 * 0.71in Product Weight: 36.6g / 1.29oz Package Size: 100 * 50 * 30mm / 3.94 * 1.97 * 1.18in Package Weight: 45g / 1.59oz Package List: 1 * Breath Tester 1*Manual