Features:  Multiple Functions: the air quality detector is available for real-time detecting the PM2.5, PM10, CO2, temperature, and relative humidity.  Large Digital Display: 2.8 inch TFT LCD color screen simultaneously display the temperature, humidity, CO2 concentration, PM2.5, PM10.  Air Quality Remind: with sound alarm, and the color of the measured value will variable according to the pollution grade.  High Accuracy Sensor: fast detecting, auto refresh, precise and reliable.  Touch Button Control: two high sensitivity touch buttons are designed for power ON/OFF and mute ON/OFF.  Portable Compact Size: measured size in 4*2.8*1.3 inch and only weights 5.8oz, the palm-size detector is little and exquisite, easy to carry and convenient for use.  Wide Applications: the versatile detector can be used in home, office, school, to detect and monitor the indoor air quality.    Specifications:  Material: ABS  Input: 5V/1A  Detection Float: 3~30%  Start-up Preheating: 0~2 minutes  Charging Time: Approx. 5 hours  Standby Time: Approx. 15 hours  Detectable Substance: PM2.5, PM10, CO2, TEMP, RH  Battery Capacity: 3.7V, 2500mA  Item Size: 106 * 72 * 33mm / 4.17 * 2.83 * 1.30in  Item Weight: 165g / 5.83oz  Package Weight: 305g / 10.78oz  Package Size: 16.5 * 10.5 * 5cm / 6.50 * 4.13 * 1.97in    Packing List:  1 * Detector  1 * USB Cable  1 * Manual (English)