... 2.4GHz baby monitor 2>1 year warranty 3>wholesale price,fast delivery 4>direct to factory ... in microphone, video and audio monitoring simultaneously Support 3 working channels Max transmitting range up to 100m ... Built-in microphone for audio monitoring* 3-channel operation allows multiple (1-3) camera system* Long operation range: up ... vision range:3m* Certificate:CE,FCC,RoHS 3-ch 2.4GHz baby monitor