Amplifies up to 30dB for those with mild to moderate hearing loss. Can be set to amplify outgoing speech up to 15 dB. (This reduces the incoming amplification by the same degree.) Has separate volume and tone controls for maximum clarity. Output jack for neckloop or headset. Twelve memory dial buttons, flash, hold, redial. Ringer volume and tone are adjustable and the red bar lights up to signal an incoming call. One year warranty. Does not require AC power, making it ideal for wall mounting.