Basic Blood Pressure Monitor, 9" - 14-3/5" Arm Circumference is manufactured by A&D MEDICAL, one of the leading healthcare product manufacturers in the world. This product is widely used by consumers and doctors around the world that keep track of their blood pressure on a regular basis. The cuff is part of the blood pressure monitor device that fits around the arm in order to measure and read blood pressure and heart rate levels. It is a vital part of the device and is helps monitor accurate readings of blood pressure and heart rate. For those concerned about keeping track of their health, in particular, their blood pressure levels, through advanced technology. This item will allow users to monitor their blood pressure and heart rate on a daily. The cuff should fit comfortably around the upper area of the arm, just above the elbow for an accurate reading. The cuff is an average size and is pretty lightweight, most elderly people can carry it without any difficulty. The cuff, which is usually blue or black in color, is wrapped around the arm. There is a cord that attaches to the blood pressure monitor. The end of the cord will have a small device that can be easily snapped into the back or side of the blood pressure monitor. Once that is snapped and batteries are placed in the monitor, the cuff is ready to work. Most blood pressure monitors are fairly accurate as long as the batteries are working, the cord is placed correctly into the monitor, and the cuff is wrapped around the arm correctly. Be sure to follow directions exactly for an accurate reading. Large cuff Widely used by doctors and most consumers Lightweight in size Easy to use