Digital platform:2.4 GHz FHSS technology;monitor LCD size:2.4''TFT,320X240 resolution;camera:CMOS SENSOR:1/4''VGA,640X480;Infrared night vision;one way communication;Monitor:rechargeable with battery;voice activation adjustable manually:more humanized;Rotate image:up-and-down or left-and-right;Adjustable sound level,brightness and sensitivity;low battery indicator;out of range alert.