Feature: 1. 1.9in color screen, equipped with high-accurate sensors, real-time monitoring of PM1.0, PM2.5, PM10 is more accurate, and reading is more intuitive and convenient. 2. Compact size and light weight for convenient carrying and storage. 3. When values reaches 36υg/m3, starting beeping sound cycle alarm, once every 10 minutes. 4. 3D porous airduct design improves airflow penetrations rate and accurately calculates the content of small particles. Real time aircirculation convection for more accurate monitoring. 5. Not only can it test the PM1.0, PM25, and PM10, but it can also test the temperature and humidity. It can be used as a temperature and humidity meter in dailylife. 6. Built-in large capacity battery for long working time. 7. Suitable for using in the car, living room, house with new furniture and decoration, kitchen, bedroom, office, classroom, outdoor environment, etc. 8. USB rechargeable design, you don\u0027t need to worry its battery. 9. With a rope for convenient carrying and antiloss. Specification: Specifications: Color: white Material: ABS+PC Preparation time: 35s Measuring range: 0-1000ug/m3 Measuring range of temperature: -10 to 50℃ Measuring range of humidity: 0-95％RH Battery : 3.7V, 1000mAh Item size: 85 * 51 * 17mm / 3.3 * 2.0 * 0.7in . Package List: 1 * AirQuality Detector