not compared directly to the doctor, but measures consistent with the usual tensions of family members japprécie 2 area memories that tracks two different people. The measurements are stored individually removable very easy to use: is placed on the wrist, the tilt is checked (marked 'OK' on the side), pressing on. and after it is like to the doctor, it quickly swells, slowly deflates and measurement appears The notice and recommendation of recalls of use are clear.