Features: Multiple Detectable Gases - upgraded indoor air quality monitor built in electrochemical sensors that can accurate detect air of Carbon Monoxide(CO),Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Compound(TVOC), Particle Matter(PM2.5/PM10). This new mode can real time data and mean value, it is recommend you to focus on mean value of each gas after testing enough time because long-term monitoring, the real-time data exist instability. This air monitor have LCD Digital Color Screen, and easy to read. This air monitor will color indication to show overall environment quality which have Good(Green), Mild Pollution(Yellow),Severe Pollution(Red) three grade. Easy Operate - This air monitor is easy to operate which just pressing the functional button full page design make everyone can easy to read all the real time readings at the same time. For household, kitchen, bedroom, office, school, car, hotel, travel, camping, party etc...especially in which has baby,child and pregnant woman. 1000mAh Rechargeable Battery - Air Quality Detector has a 1000mAh rechargeable lithium battery and packed with USB cable that can last up to 8-12 hours. Kindly Note - be aware this air quality monitor is indoor place, kindly door and window testing. Color: Blue Material: ABS Package Contents: 1xAir Quality Monitor 1X USB charging cable 1X English Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.