Features: 1. 2.8 inch LCD HD color display. 2. Display the current real-time air and temperature and humidity values, curve interface. 3. Data saving function (can store 96,000 pieces of data, only on the inst ent to view), set timing storage, delete data, view historical data. ( the left button MODE to enter the system operation). 4. Display brightness adjustment 5% -100% ( the left button MODE to enter the system adjustment). Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Celsius and Fahrenheit switch, (long the key / to switch). Support 6 languages, Chinese, English, Japanese, Korean, Russian, German (left button MODE to enter the system to switch languages). USB (mini) interface DC5V/1A charging; Powered by a 2500mah polymer lithium battery, it has a dual protection circuit for overcharging and overcurrent, and can be recharged repeatedly. Color: As shown Material: ABS Package Contents: 1 x Air Quality Monitor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.