Panasonic KX-TGM420EB Big Button PhoneLoud Volume Experience even better phone calls with the KX TGM420 phone. It boosts speech volume by 40dB, making it 17 times louder than typical cordless phones. The base station is equipped with a robust ringer that reaches an outstanding 100dB, while the phone can go up to 90dB four times louder than regular phones. Don't worry about missing any calls, thanks to the red flashing lights on both devices. Slow Talk Mode Enhance your interactions with