It is not good for the heart to run around with high blood pressure - especially when you reach a little up in age. And it is not very optimal to have sparkling down to the doctor all the time to measure blood pressure. The result is that many of us never get it done and we can walk around for years with high blood pressure before it gets discovered. It does not help an iHealth Blood Pressure Monitor. All you do is download a free App from the iTunes app store. Docking station is just to put your iPhone / iPad down in. On the bracelet, the touch of a button on your iPhon / iPad docking station and begins to pump air into the the wristband. A short while after your iPhone / iPad registered your blood pressure and heart rate and saved it. You can anytime see the development of blood pressure and heart rate over time (as a list or as a graph) and you may at any time to share your data we mail (eg. email them to your doctor). If you want to invite all your friends to follow you with a single tap on your iPhone / iPad share your results via Facebook or Twitter. Docking Station uses of course little power to pump ludt in the bracelet.You can easily recharge docking station with the included USB cable. You have the ability to create multiple users so you can measure blood pressure on the entire family.