Bad breath would make people feel uncomfortable, especially stay with girlfriends or boyfriends face to face together, how to avoids embarrassing scene? You should try this odor breath tester It will help you to know your oral odor condition Odor breath tester is specially designed to check people's breath quality. You can have a try. Usage: Open the battery box, put into 2 * AA battery and close the box. Press the POWER button, there will display 9 seconds count down. Then the display will flash "C", and right now you can breathe out 3 seconds evenly to the air intake. After one beep sound, it will display the result, the result will display 5 seconds, and shut off automatically. If you want to test one more time, just press the Power button again. Features: Adopts semiconductor sensors, which with fine sensitivity and fast responsibility, simple and convenient to use. It will show the final testing result in digital and cartoon mode, everyone can check themselves by this tester. 5 levels result: Verygood, normal, not sogood, bad, very bad. Digital LCD and cartoon indication with orange backlight, save energy and environmental protection, with soothing colors and will not hurt your eyes. Quick response and resume, with self-checking to show different conditions. Portable design, small size with compact structure, easy to put into your pocket and carry around with you. Non-contact design, breathe out 5-10mm away from the detector, more hygiene. Battery saved design, low battery indication, 2 AAA battery can provides long service time (battery is not included). Specifications: Sensor type: semiconductor sensor Warm up time: 9s Blowing time: 5s Working environment: relative humidity: 95% no dews Power: 2 * AAA batteries (not included) Item size: 95 * 36 * 18mm / 3.74 * 1.42 * 0.71in Item weight: 36.6g / 1.29ounce Package size: 100 * 50 * 30mm / 3.94 * 1.97 * 1.18in Package weight: 45g / 1.59ounce Package list: 1 * Breath Tester 1 * Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. YJL official store