Feature: 1. Large screen display makes it easier to read data, and the buttons are easy to operate. 2. Easy to carry, suitable for home, automobile, office, factory and other environments. 3. Detectable substances and functions: HCHO real-time detection and 60 minutes average value record, TVOC real-time detection and 30 minutes average value record, CO2 real-time detection and 10 minutes average value record, AQI air quality environmental assessment. 4. 24 hours real-time monitoring to protects the healthy life of you and your family. 5. The back is designed with a support frame, which can place on the flat surface more conveniently. Specification: We all know that air is an indispensable part of our lives. The quality of air is affecting our body and mind, but the air is colorless and tasteless，we can't measure it with the eyes. At this time, we need an air tester to help monitor the air quality. Features: Large screen display makes it easier to read data, and the buttons are easy to operate. Easy to carry, suitable for home, automobile, office, factory and other environments. Detectable substances and functions: HCHO real-time detection and 60 minutes average value record, TVOC real-time detection and 30 minutes average value record, CO2 real-time detection and 10 minutes average value record, AQI air quality environmental assessment. 24 hours real-time monitoring to protects the healthy life of you and your family. The back is designed with a support frame, which can place on the flat surface more conveniently. Specifications: Material: ABS Color: orange Detectable substances and functions: HCHO real-time detection+60 minutes average value record TVOC real-time detection+30 minutes average value record CO2 real-time detection+10 minutes average value record AQI air quality environmental assessment Application technology: natural air flow detection technology Display mode: LCD digital display Error float: 3%-30% Power on preheating: 120 seconds Working voltage: 5V Battery: 1 * lithium battery, 1000mAh (included) Charging time: about 4 hours Standby time: about 240-360 minutes Item size: 148 * 70 * 30mm / 5.8 * 2.8 * 1.2in Item weight: 163g / 5.7ounce Package size: 172 * 90 * 45mm / 6.8 * 3.5 * 1.8in Package weight: 305g / 10.8ounce Packing List: 1 * Air Quality Detector 1 * USB Cable 1 * User Manual Package List: 1 * Air Quality Detector 1 * USB Cable 1 * User Manual