Customer service was one of Dante's Circle of Hell. First, the watch was misdelivered, and correcting the error took a volley of emails, with the customer service representative demonstrating poor understanding of plain, direct English and a handicapped ability to communicate in same. Then, without my permission or knowledge, a second watch was shipped. This watch proved to be difficult to synch, and even more damning, the readouts were inaccurate and imprecise compared to my clinic's equipment (I'm a physician) So I wanted to return the watch for a refund, and this process was fraught with over two weeks of nearly comical miscommunications and misinterpretations, heavy saturated with thinly disguised delaying tactics and barriers, seemingly designed to thwart a return and a full refund on the device. In my opinion, this company is abiding to tech's credo of once the item is sold, the customer is an annoyance, a non-entity, and all questions and confusions and frustrations should be directed to the FAQ and forums. Humans are a merely an inconvenience, a minor speed bump along the way to the IPO . . . .