Two way Talkback: Built in microphone and loudspeaker, you can talk to your baby from afar without running back. Infrared Night Vision Sensing: 2.4 inch high definition LCD screen, infrared distance 5M, IR CUT automatic switching, day and night monitoring. Wireless Point To Point Transmission: Digital signal transmission is stable without interference, and digital signal encryption transmission is safe. Indoor Temperature Monitoring: The monitor is equipped with temperature display, and can switch between Celsius and Fahrenheit. It can monitor the baby's room temperature every day. Built in Music: The built in music can soothe the baby to sleep, and the volume can be adjusted, good user experience.