Amplified Cordless Telephone With Caller ID Digital Clarity Power technology including Multiband Compression, Noise Reduction and Acoustic Echo Cancellation Amplifies incoming sounds up to 50 decibels at 118 dBSPL Adjustable volume and four (4) tone settings for a customized listening experience Call Waiting Caller ID with 40 name and number memory Bright red visual ringers in handset and base signal incoming calls