Convenient and easy to setup, the Panasonic KXTGM422AZB Amplified Twin Pack Cordless Phone lets you communicate with family and friends hassle free. The Panasonic KXTGM422AZB Amplified Twin Pack Cordless Phone can set voice volume up to 40 dB to clear up caller voices. It also has a noise reduction to reduce the impact of background noise while listening to calls. Equipped with a speech booster, the cordless phone delivers your voice loud and clear for optimal communication. The Panasonic KXTGM422AZB cordless phone has a Slow Talk control, letting it clear up quick talkers voices and voice messages in real time for better conversations. For enhanced security, the cordless phone system has Nuisance Call Block, which lets you register up to 250 numbers for blocking.