Advanced Semiconductor Bad Breath Detector Key Features: High Sensitivity: Advanced semiconductor sensor for fine sensitivity and quick accountability. User-Friendly: Shows test results in both digital and cartoon modes, making it easy for anyone to check themselves. 5 Result Levels: Indicates breath quality levels as very good, normal, not very good, bad, or very bad. LCD Display: Digital LCD display and cartoon mode with orange backlight for energy-saving, environmental protection, and eye comfort. Quick Response: Provides quick response and accuracy, with self-check to indicate different conditions. Portable Design: Compact and portable, easy to carry in your pocket. Hygienic: Non-contact design allows breathing 5-10mm from the detector, ensuring hygiene. Battery Saving: Low battery indication and uses 2 x AAA batteries for long service life (batteries not included). Usage Instructions: Open the battery case, insert 2 x AAA batteries, and close the case. Press the power button, and it will display a 9-second countdown. When the screen flashes "C," breathe evenly at the air inlet for 3 seconds. After a beep sound, the result will be displayed for 5 seconds and automatically shut off. Press the power button again for another test if needed. Specifications: Sensor Type: Semiconductor sensor Warm-up Time: 9 seconds Blowing Time: 5 seconds Working Environment: Relative humidity ≤ 95%, no dews Power: 2 x AAA batteries (not included) Dimensions: 95 x 36 x 18mm / 3.74 x 1.42 x 0.71in Color: White Material: Plastic Package Contents: 1 x Bad Breath Detector (without batteries) 1 x English Instruction Manual Note: Light and display differences may cause slight color variations. Measurement error allowed is +/- 1-3cm.