Features: Multi-function: 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. LCD digital screen: clear large and easy to read screen, displaying the overall environmental quality with three levels of good (green), light pollution (yellow), and severe pollution (red), you can directly understand the overall environmental quality. Easy to operate: This air monitor is simple to operate, just press the function button and the one full page design makes it easy for everyone to read all the real-time readings at the same 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 places with babies, children and pregnant women. 1200mAh Rechargeable Battery: There is a 1200mAh rechargeable lithium battery with USB cable, which can standby for 8 hours with 4 hours of charging. Specifications: Model: LHW-100 Color: Black Material: ABS Battery capacity: 1200mAh Charging time: 4 hours Standby time: 8 hours Product size: 11.8 * 7 * 3.4cm Package size: 16 * 8 * 4.5cm Package weight: 226g Package List: 1 * Air Quality Monitor 1 * USB Cable 1 * Instruction Manual