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 instrument to view), set timing storage, delete data, view historical data. (Press the left button MODE to enter the system operation).4. Display brightness adjustment 5% -100% (press the left button MODE to enter the system adjustment).5. Celsius ?? and Fahrenheit ?H switch, (long press the key ??/?H to switch).6. Support 6 languages, Chinese, English, Japanese, Korean, Russian, German (left button MODE to enter the system to switch languages).7. USB (mini) interface DC5V/1A charging;8. Powered by a 2500mah polymer lithium battery, it has a dual protection circuit for overcharging and overcurrent, and can be recharged repeatedly.