Feature:      5.5-inch Large Screen and LED Screen Digital DisplayLarge screen display makes it easier to read data, convenient and intuitive, clear division, pollution level, and easy operation of buttons. Let you easily understand the current air quality status.   5-in-1 Air Quality Monitor DataDetect HCHO, TVOC, CO2, CO, AQI. One air tester to know 5 indicators. Those readings involve detection of toluene, harmful chemical substances and pollutants in the air such as carbon dioxide, carbon monoxide,smoke,fog,dust,ink and others.   Suitablesuitable for home, car, office, factory and other environment, 24-hour real-time monitoring to protect your and your family's healthy life and safety.   Easy-to-CarryMini Size to Carry, SO it can help monitor air quality at home, kitchen, bedroom, office, school, hotel, travel, camping,etc. You can take it anywhere you want to check the air quality.   Easy to Usewith One-Button Design, Press power button for 3 seconds to switch on or off. Note: It takes about 1 hour to test HCHO, TVOC, CO2 (10-15 minutes to test cabinets, drawers and other small spaces).   1000mAh Rechargeable BatteryBuilt-in 1000 mAn rechargeable battery and with USB cable, the standby time can last for 8-10 hours after full charging while others can only use 3-6 hours after full charging. and with usb cable ,you can be recharged at any time, saving costs.   Portable and Health AssistantMini-compact and easy to carry; CO2 Formaldehyde HCHO/TVOC and PM2.5/PM10 real time gas monitoring to prevent any respiratory disease. The intelligent air quality monitor can help us detect the gas air pollution in household, kitchen, bedroom, office, school, car, hotel, travel, camping, party etc...especially in which has baby,child and pregnant woman.   MaterialMade of ABS material, good feeling, non-toxic, eco-friendly and durable to use. Package Included: 1*Air quality tester, 1*USB cable, 1*User manual.   Multifunctional air quality detectorThe air quality monitor has a built-in DART electro-chemical sensor, which can accurately detect the air quality of the five major substances (AQI, HCHO, TVOC, CO, CO2), and always know the air quality of your living environment. Not only that, these readings involve the detection of toluene in the air, harmful chemicals and pollutants, such as carbon dioxide, carbon monoxide, smoke, mist, dust, ink, etc.      Specification:      Material: ABS   Display mode: LCD color digital display   Battery capacity: 1000 mAh   Warm up at boot: 120 seconds   Working voltage: 5V   Charging time: 4 hours   Battery capacity: 1000 mAh   Standby time: 240-360 minutes   Error float: 3% -15%      Package Included:      1x Air Quality Monitor   1x USB Cable   1x User Manual