Included is two leads, one 60cm and the other 90cm.
These leads allow Spektrum users to connect the satellite receiver to a different location on the plane, improving the Rx's diversity. The wire length has no affect on signal strength or quality of control. The longer wire means you can place the satellite module in the tail, far away wing panels or just keep it out of carbon or foam fuselages where they can be subject to noise and signal blocking.

1x60cm

1x90cm