The handy and easy to use unit does not only offer pristine audio clarity but good quality video transmissions. (newkidscenter.com)
The only downsides we encountered were a 5 - 7 second delay in video transmission while in live view and the lack of two - way audio. (businessinsider.com)
Simple video transmissions lack that ability, and in my feeling, that is probably the biggest objection I would have. (redeeminggod.com)