This is the pendant that calls a 911 operator with one press of a button, helping users sustain independence and mobility. Requiring no contracts or monthly fees, and operating over your existing phone line, a single push of the cordless pendant phone's button immediately dials 911, letting you converse with emergency responders--not a distant third party. The pendant comes with a lanyard and belt clip, so it's always close at hand, and its 600' range allows you to move freely around your home. A unique test function verbally informs you whether the system is within working range. Smaller than most cell phones, water resistant, and weighing a mere 6 oz., the pendant is powered for one year by one AAA battery (included). Base unit plugs into phone jack and AC. Base: 4" H x 4 1/2" W x 3 1/2" D (1/2 lb.); pendant 3 1/4" H x 2" W x 3/4" D. (6 oz.)