The main differences are as follows:
ELT560- This model is the most basic. It does not have an answering machine and does not have any Bluetooth capability.
ELBT585- This unit does have a digital answering machine. This unit can be used to pair a wireless Bluetooth headset to the handset of the base unit.
ELBT595- This unit does have a digital answering machine. This unit can be used to pair a wireless Bluetooth headset to the handset of the base unit or can be used to pair a Bluetooth cellular telephone to the base unit. You can then use your base unit and/or flip design handset to make or receive calls using your cellular minutes.
For additional information on the two ELBT phones, please visit our bluetooth website by clicking on the link below:
http://www.uniden.com/elbt/index.html