I'm looking for either an audio or a video monitor that both the parent unit and the baby unit is completely battery-operated. It can be either rechargeable or normal batteries, I just need it to not have to be plugged in while in use, and not connected to Wifi.

I've ordered a couple, only to find out that only the parent unit is fully battery operated, and the baby unit has to be plugged in.

It would be great for it to be video, with a longer range (like 1000 ft), but I'll take any suggestions!

Help please!