This BT energy efficient phone uses up to half the amount of energy of a regular phone. The Bt Freestyle 750 phone has an answer machine with up to 11 minutes digital recording time that can be accessed remotely. This phone also has a talk time of up to 10hrs, a standby time of up to 100hrs, and a 50 name and number directory. The BT Freestyle is hearing aid compatible and has a stylish big button design, making it easy to operate and user friendly.