1. As this five-in-one air quality monitor is significant to individuals, it could be a good choice for you. It can accurately monitor carbon dioxide, total volatile organic compounds, formaldehyde, humidity, and temperature, allowing you to monitor the environmental conditions at any time. 2. This air quality monitor is equipped with a chip that has quick response and sensitivity, capable of accurately capturing the weak current generated during the electrochemical reaction process. The dual-color display and voice alarm functions help you conveniently understand the current air quality. 3. It has a built-in 1200 mAh rechargeable battery and comes with a 5V USB charging cable. The standby time can reach up to 10 hours, so you don't need to worry about power shortage. 4. The mesh design enables the device to dissipate heat better during operation, preventing the device from overheating and thus helping to obtain more accurate measurement data. 5. Color: White 6. Material: ABS 7. Package contents: - 1 air quality monitor - 1 USB charging cable - 1 English instruction manual 8. Only the above package contents are included, and other products are not part of the package. 9. Note: Due to light reflection and different monitor settings, the color of the items in the picture may vary slightly from the actual product. The allowable measurement error is +/- 1 - 3 cm.