British Telecom 025456 telephone

Synergy 4500 Twin The Synergy 4500 from BT is one of the sleekest telephone handsets around, with a matt black finish, and is feature packed with virtually all the functionality you could require from your home handset. You can copy your mobile SIM card to your home phone, meaning that not only do you have the convenience of being able to have all your favourite numbers on hand, without having to re-key them all into the handset, but you are also making a safe copy of your contacts, so that if you lose your mobile, you're not losing all your precious numbers.