... 4GHz wireless baby monitor, 2.5'' TFT LCD monitor, 4 Infra-red LED on the camera for Night vision Features: * 2.4 ... crisp, clear images * Built-in microphone for audio monitoring *4 Infra-red LED on the camera for Nightvision (Day & Night Uses) * ... multiple (1-4) camera system * brightness,contrast,volume adjustable* red, blue and yellow availableCamera specification:Frequency:1CH:2414MHz,2CH:2432MHz ...