Worked fine in the beginning. Stopped working after two months.Highly recommendMy mother at 79 years old suffers from severe right and left knee pain and is not a safe candidate for surgery. She cannot take drugs like Aleve or ibuprofen. So she has tried every kind of supplement and non-prescription medication available that I review and order for her due to my training as a nurse practitioner. This has given her more relief than anything. She wears it everyday. She finds both the heat and massage functions give her relief and have decreased swelling. What makes it so different from other heated braces is that she doesn’t have to stay near an electrical outlet to use it. With it’s detachable battery packs in she can walk around with it fully operational. She even went to lunch with it on! I bought her back up, compatible, battery packs from Amazon so she can charge 1 or 2 while wearing one so she never runs out of power before she can charge. I can not recommend it enough as long as it is safe for you!Order came in quickly! I do a lot of mountainbiking and usually day/weekend trips. Especially after weekend trips doing 60+/- miles a day, my legs and knees are pretty stiff the week after. As result, I am trying to stretch more and use heat packs on my knees until I found the heated knee Brace. It’s exactly what I was looking for and does a perfect job heating the knee and increasing blood circulation around it. My knees usually are only sore/stiff for a day or so after using the brace while before they could be sore/stiff for almost week! The brace is very sturdy built and I like the Velcro fasteners, Easy to use. It has both heat and vibration settings with 3 different levels. The highest level is pretty hot. I also like that it’s wireless and the battery last pretty long as well before you need to recharge. But wireless is a big benefit since you can just walk around the house etc without being limited. I would definitely recommend the knee brace for anybody that has knee issues that require better blood flow for healing purposes or stiff knees in general!This heat and massage brace has worked well for the three weeks I had it. The individual controls are wonderful. You can have vibration on without heat or heat on without vibration or both on together. The built-in timer gives you 30, 60 or 90 minutes. The straps that hold the brace in place hasn't lost any of it's strength in three weeks with me using it twice a day.It has twin vibration motors which are very strong with powerful heat The vibration motors seem to alternate giving the area a complete therapeutic treatment. I pulled a muscle in the back of my knee playing tennis I put the brace on backwards to treat the area. I recovered from an injury that was supposed to take two to four weeks in one week. I still use it twice a day because I'm 64 it helps me prepare myself for my tennis matches.Had meniscus surgery a decade ago. Lately, it’s been causing me excruciating pain. Ordered this brace, and it was delivered in two days, put it on, and immediately my pain subsided. I wore it that first day non-stop. Didn’t use it at all after that. The heat and massage was all my knee needed and it feels fantastic at the time of this review.I would add that I’m pretty sick and tired of negative reviewers that seem to want to over scrutinize everything! One stated that the heat output was lacking. Disregard that review cuz mine got so hot (through a pair of Levi jeans) that I had to turn it down to medium. This product far exceeded my expectations...and my knee is loving it!!!Great fitI had my left knee joint replaced 10 years ago and I now have tightness and soreness on the sides of the joint that limits the flexibility of the joint. I bought this heated knee brace wrap in hopes the heat and massage would reduce the pain and help improve the flexibility of the joint. The heating element in this wrap applies heat to only the knee cap and the very mild massage units are on the side of the joint. This combination is not helpful at all. The heating unit is capable of overheating your skin through your pants as I ended up with red skin on my knee cap after 45 minutes of use.