Characteristics: Multifunctional: it can accurately detect carbon monoxide (CO), carbon dioxide (CO2), formaldehyde (HCHO), volatile organic compounds (TVOC) and particulate matter (PM2,5/PM10) in the air. Digital LCD screen: clear, large and readable screen, displaying the overall environmental quality with three levels of good (green), light pollution (yellow) and serious pollution (red), you can directly understand the overall environmental quality. Easy to use: This air monitor is simple to operate, simply press the function button, and the one-page design makes it easy for everyone to read all the readings simultaneously in real time. Portable: This smart air quality monitor is portable and can help us check the air quality in kitchens, bedrooms, offices, schools, cars, hotels, parties and other places, especially in places where babies, children and pregnant women are staying. 1200mAh Battery: There is a 1200mAh lithium battery with USB cable, which can standby for 8 hours with 4 hours charging. Technical data: Model: LHW-100 Colour black Material: ABS Battery capacity: 1200 mAh Charging time: 4 hours Standby time: 8 hours Product Size: 11.8*7*3.4 cm Package Weight: 226g List of packages: 1 * Air Quality Monitor 1*USB cable 1 * User Manual