1. 2.4G wireless digital signal transmission, more than 250 frequency hopping, free from WIFI interference 2. Digital signal encryption transmission, good security 3. The barrier-free transmission distance reaches 200 meters and the partition wall distance is 30 meters. 4. 2.4 inch high-definition LCD screen, the image display is clearer 5. Both the camera and the monitor have a built-in battery, which lasts longer than 2H. 6. Built-in baby sleep lullaby, can be controlled by the screen control camera 7. Monitor with temperature display, Celsius and Fahrenheit switching 8. Baby monitor with two-way intercom function 9. Notice: Do not use this apparatus near water.