Great product easy to use and accurate. Feature that indicates irregular heart beat is a plus because you can see at an instant if the heart is not beating as it should. Portability and ease of use with not needing to put a cuff around the arm makes it a snap to put on record the blood pressure and beats per min (can hold 90 records before it overwrites the oldest) uses AA batteries so no cords needed.Get more detail about Omron HEM-650 Wrist Blood Pressure Monitor with APS (Advanced Positioning Sensor).