Feature: 1. Air Quality Measure: Indoor air quality monitor built in electrochemical sensors will measurements such as air of Carbon Monoxide(CO), Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compound(TVOC), Particle Matter(PM2.5/PM10). 2. Easy To Operate: Air monitor have LCD Digital Screen, just press the function button, a full page design allows everyone to easily read real time readings. 3. Convenient To Carry: Easy to carry the intelligent air quality monitor that can help us detect the air quality in household, kitchen, bedroom, office, school, car, hotel, travel, camping, party and especially in which has baby,child and pregnant woman. 4. Rechargeable Battery: Air Quality Detector has a 2000mAh rechargeable lithium battery and with USB cable, will always take care of you and your family health. 5. Good For Life: Can directly understand the overall environmental quality and track average value of each air to understand which gases in the air are unsafe and take corresponding actions. Specification: Item Type: Air Quality Monitor Built In Battery: Lithium Battery 2000mAH Measuring Range: HCHO=0-1.712mg/m³ TVOC=0-12.50mg/m³ PM25=0-1000ug/m³ PM10=0-1786ug/m³ Working Time: 4h. Package List: 1 x Air Quality Monitor1 x USB Cable1 x Manual