Advanced semiconductor sensor with fine sensitivity and quick response, simple and convenient to use. Displays the final test result in digital and cartoon mode, allowing anyone to easily check themselves. Features 5 result levels: very good, normal, not very good, bad, and very bad. Digital LCD display with cartoon icons and orange backlight; energy-saving and environmentally friendly design with soft, eye-friendly colors. Fast response time with self-check function to indicate different conditions. Portable design with small size and compact structure, easy to carry in a pocket. Non-contact design – simply breathe from 5-10mm away from the detector for improved hygiene. Battery-saving design with low battery indicator. Powered by 2 x AAA batteries (not included) for long service life. Usage: Open the battery compartment, insert 2 x AAA batteries, and close the compartment. Press the power button to start; the device shows a 9-second countdown. When the screen displays "C", breathe evenly for 3 seconds into the air inlet. After a beep, the result will appear and remain visible for 5 seconds before the device automatically shuts off. To perform another test, press the power button again. Specifications: - Sensor type: Semiconductor sensor - Warm-up time: 9 seconds - Blowing time: 5 seconds - Working environment: Relative humidity ≤ 95%, no condensation - Power: 2 x AAA batteries (not included) - Item size: 95 x 36 x 18mm / 3.74 x 1.42 x 0.71in - Color: White - Material: Plastic Package Contents: - 1 x Bad breath detector (battery not included) - 1 x English instruction manual Note: The package includes only the items listed above. Other products are not included. Lighting and display differences may cause slight variations between the item color in the image and the actual product. Measurement error allowance: +/- 1-3cm.