The LifeSentry medical pendant is built to last with a minimum one year warranty. When it comes to the safety of you and your loved ones, a durable and reliable product is paramount. In fact, the LifeSentry pendant can even go into the shower with you or out in the the rain. With added hazards of wet surfaces this feature should be mandatory. Take your pendant anywhere in your home during any activity knowing that help is only a button away. Test as often as you want for your confidence it will work. With a standard personal emergency response system, you are limited by the location of the base station because you have to be within "range" to hear the call center talking to you or reply. If you are too far from the base you cannot hear, and more importantly, you can not tell them what the emergency is, urgent or not! more... See more text