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 display: Large, clear, easy-to-read display, displaying 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 use: This air monitor is simple to use, just press the function button and the design of 'one full page makes it easy for everyone to read all real-time readings at the same time. Portable: This smart air quality monitor is portable and can help us check the quality of the air air in kitchens, bedrooms, offices, schools, cars, hotels, parties and other places, especially places with babies, children and pregnant women. Rechargeable battery of 1200 mAh: There is a 1200 mAh rechargeable lithium battery with USB cable, which can standby for 8 hours with 4 hours charging. Features:< br/> 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 * Manual 'instructions