1、New environmentally friendly materials are more comfortable to use and can be placed in every corner of the family. 2、Use imported brand air quality detection and analysis chips to ensure that the instrument detection is more accurate. 3、For formaldehyde HCHO, chemical pollutants TVOC, carbon dioxide CO2, 0.001mg/cubic meter kilobit accuracy. 4、Adopt natural air flow detection technology to more accurately determine air quality problems. 5、Small and light, you can take it with you when you travel. A good choice you should make. 1 x Air Quality Detectornbsp;1 x Manualnbsp;1 x USB Data Cable Item Type: Air Quality DetectorMaterial: ABS + Electronic ComponentsProduct Size: Approx. 68 x 70 x 40mm / 2.7 x 2.8 x 1.6inWeight: Approx. 131g / 4.6ozDisplay Mode: LED Digital Display + Light IndicationError Fluctuation: 3-30Working Voltage: 5VPower-on Warm-up: 120 SecondsBattery Capacity: Lithium Battery 1000 MAh (Built-in Battery Shipped)Charging Time: About 4 HoursStandby Time: About 240-360 Minutes