Designed to provide Bluetooth technology similar to the XMC050 remote for radio functionality, but with a slimmer, horizontal styling – and without the need for batteries. When finished with your channel selections, simply insert the remote (XMC055) back into its cradle (XMC055C) for aircraft recharging. No batteries to swap and no remotes to lose. The XMC055 requires one XMR050 audio receiver and associated XM antenna.