Advanced Oral Odor Detection: Our device, armed with a precise MEMS sensor and 32 - bit CPU, rapidly and accurately detects VSCs that lead to oral odor. The non-contact, hidden-cartridge design guarantees top-tier hygiene. Inhale deeply, then exhale steadily towards the holes for 3 - 5 seconds at a 1 - cm distance. 4-Level Oral Odor Leves for Oral Health: Our oral odor monitor classifies oral odors into four distinct levels. Level 1 indicates no noticeable smell, Level 2 a faint odor, Level 3 a medium - strong smell, and Level 4 a very intense smell. When using, deeply inhale then exhale steadily towards the holes for 3 - 5 seconds at a 1 - cm distance. Innovative One - Key Oral Odor Check: Starting the breath freshness device is a breeze. Simply press and hold the power button for 3 seconds. It enters a 9-second pre-heating phase, signaled by a vibration and a flashing blue light. Then, inhale deeply, exhale steadily through your open mouth towards the holes for 3 - 5 seconds, 1 cm away, for an instant evaluation of your oral odor. The one-button operation is ideal for convenient at-home or on-the-go oral cavity testing. User - Friendly Data Interpretation: Our Oral Odor Monitor simplifies data. With 4 - level classification, it gives clear cues. When odor exceeds the norm, the LCD turns red and the device vibrates. you can adjust diet or oral care for better odor management and oral health. Accurate Oral Odor Monitoring Precautions: For reliable results, this oral odor device is not suitable for measuring food-related odors due to their short-lived nature and lack of reference value. Color: White or Black or Green Material: plastic Package Contents: 1 x Bad Breath Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.