Number of phone Lines 1 Powerful phone Battery Backup : With a charged cordless handset in the base unit, Enjoy up to 7 hours of talk time when the power goes out; Power source 120 Volt AC ...

There’s still plenty of demand for the best landline phones, as witnessed by two of BT’s models; the BT4600 Big Button and this one. The all singing, all dancing BT Premium Cordless Phone.