NextAlert ONE Button Emergency 911 Only Mobile Cell Phone NO CONTRACTS, NO FEES Cellular Medical Alert System &hellip; NextAlert is very simple to use and will work with the press of the emergency button when you need it. The single, one-time purchase of the NextAlert gives you the medical alarm youve always wanted. The emergency necklace is water-proofed to work in the shower where accidents frequently happen. Speak directly to the emergency operator through the necklace. Operates in the same way as a 911 phone. Does not have GPS, so user must speak to dispatch. Just like calling 911 on the telephone. There are no fees, no contracts, and no activation costs associated with this medical alert. Connects to a 2G tower; these are the original cellular towers so that means a lot of reach. No landline necessary. This device is totally cellular. Battery lasts for several months, but to be safe, charge in monthly intervals. Water Proof Speak directly through the device. Can be worn inside and outside of the house since the device is cellular. No base. Works throughout the United States on the pre-existing cellular network.