Features: Experience precise air quality monitoring with our multifunctional handheld air particle tester, capable of detecting particles as small as 0.3μm and up to 10μm, ensuring comprehensive PM2.5 and PM10 analysis for your environment. This device features high sensitivity sensors, double measurement modes, and realtime data display, making it essential tool for accurate dust particle counting. Ideal for environmental monitoring professional, industrial safety engineers, and air quality enthusiasts seek reliable and efficient air particle analysis. Perfect for use in factory workshops, laboratories, offices, public space, and home environment, providing critical insights into air quality for improved health and safety. With 2000mAh battery, enjoy extended usage time and peacing of mind knowing you can monitor air quality anytimes, anywhere. Specifications: Component:ABS Size:Approx.175x70x30mm/6.88x2.91x1.18inch Color:Black Battery: 3.7V battery 2000mAh Working temperature: 0~50℃ Storage temperature: -20~60℃ Package Includes: 1pcs Air Quality Meter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.