[Waterproof]: This FS-GR3E receiver is waterproof with light blue label.
[How to Bind] : System switching: turn the steering wheel and press the“BIND”button when turn the transmitter on. The current system is AFHDS if the green LED keeps flashing. Press the“BIND" button to save the current system. The current system is AFHDS 2A if the green LED flashes twice every time. Press the“BIND" button to save the current system. Restart the transmitter, and the current system is what you saved before.
[ What you get ] 2 X Flysky FS-GR3E 2.4G Receiver, 12-months worry-free warranty, and friendly customer service.