Cordless Telephone - Bluetooth - works during blackouts (Dean EH4)

Would this landline based telephone be of any use to someone? It can connect wirelessly to your mobile and works during power cuts/blackouts. Has answering machine. Has 2 cordless handsets. It will need two new rechargeable handset batteries (one for each handset). Or just one battery if you chose to use just the one master handset.
* Please note, the power cords have Australian plugs, so you would need a UK adapter
See photos for more details.
Collect from EH4 near Dean Bridge

       
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