Features: Advanced semiconductor sensor, which for w\/ fine sensitivity quick responsibility, simple convenient to use. It will show the final test result in digital cartoon mode, everyone can be verified by this tester. 5 result levels: very good, normal, not lousy, bad, very bad. Digital LCD cartoon indication for w\/ orange backlight, save energy environmental for protection, for w\/ soothing colors will not hurt your eyes. Quick response resume, for w\/ self-checking to show different conditions. Specifications: Sensor type: semiconductor sensor Heating time: 9s Blowing time: 5S Working environment: relative humidity: \u2264 95% without dews Power: 2 x aaa batteries (not included) Item size: 95 x 36 x 18mm \/ 3.74 x 1.42 x 0.71in Item Package Includes: 1Pcs Bad Breath Tester note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!