Feature: 1. Air quality detector has 1200mAh rechargeable lithium battery and packed with data cable, the charging time is about 4h, and the standby time is about 240‑360 minutes. 2. High definition LCD screen, the measurement results are displayed on the high definition screen, large and easy to read, easy to operate and easy to use. 3. The compact and lightweight design is easy to transport and can be easily measured from one room to another. It is widely used in homes, offices, enterprises, governments, schools and automobiles. 4. The air quality detector can be used to understand the air quality general situation of homes, workplaces, schools, daycare centers, or any other place. 5. It is also an indispensable tool for property inspections or use any household tools to check if there is an abnormal amount of toxins released. Specification: Item Type: Air Quality Detector Material: ABS Color: As shown in the picture Product Size: Approx. 118x70x34mm / 4.65x2.76x1.34in Weight: Approx. 226g / 8oz Display Mode: LCD Working Voltage: 5V Start Up Preheating: 120s (only formaldehyde TVOC induction) Screen Digital Display Error Floating: 3%-30% Battery Capacity: 1200mah 18650 Lithium Battery (Built-In Battery) Charging Time: About 4h Standby Time: About 240-360 minutes Application: It is widely used in homes, offices, enterprises, governments, schools and automobiles. . Package List: 1 x Air Quality Detector 1 x Instruction Manual1 x Data Cable Note: 1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.