I hesitated to buy my blood pressure. I read a lot of customer reviews to evaluate the product would be the most reliable. I chose the Beurer - BC60. A wrist blood pressure monitor sold on the Amazon site. After two months of use, I am satisfied with the product. Before submitting these comments, I waited to verify the extent of this device with the voltage gain in my doctor. The measures are the same (satisfactory). This device is easy to use and I'm happy with this purchase. The monitor comes with a protective box which is convenient to transport it while traveling. It also has two sixty recordings marker ranges with average catches of tension.Super. I had read that other wrist blood pressure monitors were hungry batteries. After two months of daily use, the batteries are still good. I bought other products at Amazon.com and I have not to date had any problems. This online site seems serious and delivery is fast.