The product itself works fine, but the day after I received it, I was in Wal-Mart and saw a Home-Medics version of the SAME THING for $29.95 and decided to buy it to compare. I did not feel any difference between the 29.95 Walmart version and this $189 version. The Walmart thumper had more settings, AND heat option (if you like that). When I contacted Pro Therapy Supplies to return this unit - because you have to contact them to get a return authorization number(sigh) - they informed me that there would be a 10% restocking fee. So I figure I'm out about $30-$35 total just for ordering this product even though I didn't keep it. Take my advice, go to Wal-Mart and order the Home Medics percussion massager and save yourself a ton of money.