Features (Model ZC808R/ZB325A) * 2.4GHz Wireless Palm Baby Monitor * 2.4GHz 2.5' LCD Palm Size * have 6 Infra-red LED on the camerafor Nightvision (Day & Night Uses) * Small palm size of receiver for mobile usage. * 2.5 LCD screen with 480 X 234 resolution. .* 4-channel operation allows multiple (1-4) camera system. * 380TV lines sharp picture display. * Built-in microphone in camera and speaker in * receiver for audio monitoring. * Min 100m transmission distance without block. * Brightness and Ratio option. Other Related Products: 1) IP Camera 2) Hidden Camera 3) CCD Camera 4) Car Back View Camera 5) Dental Intra-oral Camera 6) 2.4GHz Wireless DVR 7) Wireless AV Sender 8) ....