style="font-size: 1px;">Advanced semiconductor sensor, with fine sensitivity and quick accountability, simple and convenient to use. style="font-size: 1px;">It will show the final test in digital and mode, anyone can check themselves by this tester. style="font-size: 1px;">5 levels: very good, normal, not very good, bad, very bad.Digital LCD display and with orange backlight, save energy and environmental protection, with calming colors and will not hurt your eyes. style="font-size: 1px;">Quick response and cv, with -check to show different conditions. style="font-size: 1px;">Portable design, small size with compact structure, easy to put in your pocket and carry with you. style="font-size: 1px;">Non-contact design, 5-10mm from the detector, more .Battery saving design, low battery indication, 2 x AAA batteries long service life (battery is not included). style="font-size: 1px;">Use:Open the battery case, put into 2 * AA battery and the case.Press the power button, it will display 9 seconds countdown.Then the screen flashes "C", and at this moment you can 3 seconds evenly at the air inlet.After a beep sound, it will display the , the will display 5 seconds and automatically shut off. style="font-size: 1px;">If you to test time, press the power button again.Specifications:Sensor type: semiconductor sensorWarm-up time: 9sBlowing time: 5sWorking environment: relative humidity: less than or to 95% no dewsPower: 2 AAA batteries (not included)Item size: 95 x 36 x 18mm / 3.74 x 1.42 x 0.71inColour: whiteMaterial: plastic Contents:1 x bad breath detector (without battery)1 x English instructionOnly the above content, other are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. style="font-size: 1px;"> The measurement allowed error is +/- 1-3cm.