Working on the 5.8 GHz spectrum, the Vtech LS5145 offers great clarity with interference free calls. This Vtech Bluetooth phone can be extended up to 12 handsets to suit your requirements. The built-in digital answering machine in this Vtech 1-line cordless phone records messages for you while you are unavailable. The speakerphone in this Vtech Bluetooth phone lets you enjoy hands-free conversations. This Vtech LS5145 can store up to 100 numbers in its phonebook directory. Transfer calls between handsets or speak to person in the next room using the intercom facility in this Vtech 1-line cordless phone. With the Bluetooth Wireless Technology in the Vtech LS5145 you can connect to Bluetooth cell phones to make and receive calls.