Detailed parameters The system latency only 1-2ms, camera to screen latency is 30-50ms
480p 1.5km, 720p 1km  with 200mw output power.
Frequency hopping technology, no frequency interference even operate in same frequency .
9 work channels, max 3-4 systems work in same time same area.
5Ghz system
HDMI output + Wi-Fi output, can work with HDMI devices (Fatshark goggles/monitor) and mobile device same time. 
Recording video in mobile devices, easy to upload to Internet.
Wide voltage input from 3S-6S battery.