Amplification up to 50dB and a push button tone control for clear sound for mild to severe hearing loss. Ringer volume is adjustable up to 95dB with a flashing red visual indicator. Caller ID display and LED backlit keypad for easy dialing. Two direct call and three emergency memory dial buttons for one-touch dialing. Baby Call feature allows the keypad to be locked so one pre-programmed number will be dialed at the press of any key. Great for leaving the elderly or disabled home with peace of mind. Additional RJ11 phone jack on the base to easily connect an additional ring signaler. Rubber cushion on the earpiece provides soft touch to the ear and comfort with custom hearing aids. 2.5 mm headset jack and 3.5mm audio jack for neckloop or other hearing aid or CI direct connect. Hearing aid compatible. One year warranty.