Useful but Quit working after 1 wk with no trouble shooting information.
This relatively inexpensive device was clearly gradually reducing the intensity of my neck pain after just a few applications.  However,  After  a dozen or so uses, about a week, it just quit pumping  up.  Better English trouble shooting information might have helped me get it functioning again but even the basic English instructions were not well worded.  The device clearly delivered what was promised but was not well presented to the prospective user.<br />William Boles
Rating: 3 stars