Fangrui Product Details [comprehensive Air Quality Test]: This 5-in-1 Air Quality Tester Integrates Multiple Test Functions For Measuring Tvoc Hcho Temperature Humidity Co2 Meter, [tft Color Display App Control]: 2.8-inch Tft Color Screen, You Can See The Test Data Clearly At A Glance. With The Tuya App, Enjoy Real-time Testing And Remote Management Of Your Homes Air Quality From Anywhere You Are. [personalized Settings Historical Data Checking]: Supporting Customizes Alarm Limits, Sets Sleep Modes, And Effortlessly Explores Detailed Historical Data On Air Parameters By Day, Month, Or Year. The App Also Boasts A User-friendly Interface With Options For Temperature Unit Switching And Versatile Timer Settings, Ensuring A Personalized And Convenient Experience Tailored To Your Needs. Name: Air Quality Tester Battery: 3.7v Lithium Battery Working Voltage: 5v Charging Method: Usb 500ma Type-c Interface Charging Time: About 4h Standby Time: About 300-360 Minutes (built-in Multiple Sensors, High Power Consumption) Battery Capacity: