Features: Elevates your home air quality with our air quality monitors, a comprehensive solution for a healthier living environment. Featuring a high precisions semiconductor TVOC sensing and electrochemical detection module, this air quality tester delivers accurate readings with a large screen that displays batteries life, CO2 concentration, temperature, and humidity. For health individuals and family who want to ensure their indoor space are safe and comfortable, this air quality monitors is a must having for maintaining optimally air conditions at homes. For use in bedrooms, living room, offices, or any confined space, the monitors help you stay informes about the air you breathe and take action to improved it. With its long lastings 1200mAh battery, quick 2-3 hour charges time, the air quality monitors ensures you can keep eye on your indoor environment anytimes and anywhere for peacing of mind. Specifications: Component:ABS Size:Approx.7x3.5x9cm/2.76x1.38x3.54inch Type:Black+Green/White+Green Built in lithium battery 1200mAh 3.7V Charging for 2-3 hours can last 240-360 minutes Package Includes: 1pcs Air Quality Tester 1pcs Manual Instruction 1pcs Data Line note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.