Easy to use device. Large, easy to read display. Slightly clunky, but can werden.Es well taken appears that the cuff is properly seated. The last measurements can be displayed. Manual understandable - but the unit is so easy to use that you hardly need. Why only 4 stars? I'm not quite sure if the device measures excessively high values. I had a 24 hour meter to the Hospital, whose measurements deviated downward from those of the Omron 300.