Light Weight and High Strength: Aluminum alloy has low density, light weight, but high strength, excellent mechanical properties , and is an excellent structural material. Multifunctional Indoor Air Quality Monitor : This indoor air quality monitor accurately assesses intemperature & humidity level, and multiple measures of air quality. Including concentrations of synthetic volatile compounds, particulate dust matter (PM1.0). Portable Testing : Just pressing the power on/off button, keep the device turned on and it will take the measurement automatically. Small and lightweight, help monitor air quality at home, in the car, and room Design with LCD screen digital display, you can see all the information clearly. Innovative Technology : This indoor air quality monitor has a built quickly draw in ambient air to allow real time measurements. Reminder : This indoor air quality monitor the detected data and then evaluate the risk rating. When the value exceeds the normal range, the detector's alarm will sound and the interface color will turn red to indicate the risk. Specification: Material: Aluminum Alloy Charging for 1 hour, usable for 15 hours Size Chart: 1.6cmx2.7cmx10.5cm/0.63inchx1.06inchx4.13inch Package Includes: 1 Air Quality Monitor 1 USB Cable 1 Manual Note: Please allow slightly errors due to manual measurement and different monitors.