Senior Elderly Medical Alert System - NO Monthly FEES Ever No Monthly Fees - 100-150 Foot Panic Button range - Telephone Speakerphone Waterproof Panic Button - Calls 1-30 Phone Numbers using a landline In the Event Of Emergency (up to 4 more panic buttons can be added) Strobe Light Ringer - Amplified Speakerphone and Ringer (great to see the phone ring when the environment is noisy) No landline you can use an optional bluetooth cellular adapter and call through your cell phone Battery backup - Talking caller ID - Big Buttons -Talking Buttons when dialing