Not only does the HEM-637 Wrist Blood Pressure Monitor utilize Omron's patented IntelliSense technology, but it also features the innovative Advanced Positioning Sensor (APS). With the APS system, this wrist unit will ensure correct cuff placement before your blood pressure is taken. The monitor is incredibly easy to use -- simply wrap the cuff around your wrist, press start, and let the APS system guide the cuff to the proper placement at heart level. In seconds, your blood pressure and pulse are displayed on the large digital screen. Proven time and time again, Omron's IntelliSense technology ensures accurate, clinically-proven, and comfortable readings. And with a 90 memory recall you can track your blood pressure and pulse progress as you work towards a healthier lifestyle. HEM-637 wrist blood pressure monitor, storage case, two AA batteries, and instruction manual.