Have had great results, but newer model didn't quite compare
Product update: After six months of beneficial use, the belt stopped working.  We think the problem lies in the recharging cord, but for whatever reason, the belt is not heating up. This is the second belt we've had; the first one performed extremely well with heavy use for several years.  If this is the "new, improved" variety, we're not quite so impressed.  I wrote the following review based on our previous, very positive experience with this product. I won't change our general assessment, but would urge some careful research since there are now, apparently, "up-graded" models, including rechargeable battery packs, different types of disks (we have the jade ones), etc., and we just don't have experience with all of them. It's not an inexpensive product, so one hopes for long-term performance.  Our second purchase just didn't compare in this regard.<br /><br />Earlier review: My husband has been using this heating belt for his chronic lower back problems for several years and he's found it to be the most helpful device he's tried. He's now on his second belt after wearing out the first one from frequent use.  The jade stone disks retain the heat well and yet they are not too hot to be uncomfortable (however, he does wear the belt over a light t-shirt when using it). The belts we have purchased use electricity to warm up to the target temperature and an indicator light goes from red to green when ready to use. (I understand there's a battery pack variety also available, but we have no personal experience with that model).  It doesn't take long to charge the belt -- the new belt charges in under 5 minutes (the previous iteration took a little longer).  The wide velcro ends allow for a comfortable, easily adjustable fit.  All in all, this is an excellent and effective product. Highly recommended.
Rating: 4 stars