I've owned the Panasonic wrist BP monitor for 2 years and unfortunately - I haven't found it to be a very accurate device. Positioning of your arm is critical to getting a good reading - however, I found that an immediate comparison with a cuff type device (upper arm cuff), showed the readings on the Panasonic to be inaccurate by a wide margin. It took me awhile to figure out that the readings were wrong - and it caused me to delay starting BP medicine when I really needed it. I'd reccomend a cuff type model in place of this.