• One-touch Video Call • 3K QHD Image • Human & Pet Detection • Abnormal Sound Alarm • just press the button on the Rex VT and make a video call to your loved ones • You can set the Rex VT to detect high-decibel abnormal sounds in the App • lens delivers 3K UHD image • provides infrared night vision and will automatically turn on and off • screen display the date, time, weather, network status, charge status, and privacy mode status