12.4G wireless digital signal transmission, more than 250 frequency hopping, free from WIFI interference. 2Encrypted transmission of digital signal with good security. 3Barrier-free transmission distance up to 200 meters, partition wall distance 30 meters. 43.5 inch HD LCD screen, image display clearer. 5Cameras and monitors have built-in batteries that last longer than 2 hours.Features: 1. 2.4G wireless digital signal transmission, more than 250 frequency hopping, free from WIFI interference. 2. Encrypted transmission of digital signal with good security. 3. Barrier-free transmission distance up to 200 meters, partition wall distance 30 meters. 4. 3.5 inch HD LCD screen, image display clearer. 5. Cameras and monitors have built-in batteries that last longer than 2 hours. 6. Built-in baby sleeping hypnotic song can be played through screen control camera. 7. Monitor with temperature display, Celsius and Fahrenheit switch. 8. The baby monitor has two-way intercom function. Specification: Condition: 100% Material: Plastic Color: White Optional Plug Type: US Plug, UK Plug, EU Plug, AU Plug Voltage: 100- 240V Package list: 1 * Monitor 1 * Camera 2 * USB Cable 1 * User Manual