HollyLand Mars 300 Wireless Video System
Mars 300 Wireless Kit: https://cheesycam.tv/mars300
With the Mars 300 you'll get a system that works up to 300ft Line-of-Sight Range, up to 1080p 60 Uncompressed signal, a loop-out on the transmitter (in case you want to attach a second monitor), and powered by standard Sony L-Series batteries. If you want to power the system externally you can use 6-16V DC Power Input which means you can even power through p-tap (d-tap) from your v-mount or most any battery with a DC out.
more information: http://Cheesycam.com