The FS-iT4 has three real time displays (without connecting any telemetry
sensors or serial bus receiver) which are:
1. Signal Strength Meter - 5 bar style; 5 bars = full strength signal; super
sensitive - really works
2. Rx Battery Meter - sweeeet!
3. Error Rate display - somehow works with the Signal Strength Meter. On
page 17 it may be what the manual describes as "Receiver Sensor State Feedback"

The LiPo battery reduces weight quite a bit. The onboard charger tops off
the battery relatively quickly.

The FS-iT4 is holding solid connections at over 0.5 mile.

For once I'm glad I was one of the first to try something 'cause usually
I won't ever jump in early. So far, FlySky has exceeded my expectations.