Bests & Worsts Reviews from Amazon

I've used a TENS unit for years and am very familiar with the electric sensation this unit provides. I must say, however, the Flex Belt is far better constructed than I imagined and it fits comfortably around my 38" waist. It's also very thoughtfully designed with various programs and settings. The ability to recharge the control unit without replacing the battery is also a plus. You can also replace the rechargeable battery, when needed, or the entire control unit if it fails. It's all very modular. Others have covered the effectiveness of using this belt and I concur with their observations. My abdominal muscle tone has improved considerably after only a few weeks of daily use. I'm most fond of program #7 as it provides intermittent crunches that really grab you. I definitely give the Flex Belt five stars both for its design and effectiveness. Two caveats I thought I'd share: first, if you clean the oil off your skin with Windex or other household cleaner prior to use, the pads will retain their stickiness far longer. I've been using mine daily for a month now and the pads feel almost new. This should help with the overall cost. Adding conductive gel does work, and is inexpensive, but you are left with residue on your skin that must be cleaned off with a solvent, like Goo Gone. A fine mist of water on the pads also helps with conductivity as they age. Second, I had hoped there was a way to arrive at the higher settings more quickly. I'm now using 120 and getting there takes some time in increments of 1. There is a work around, however. If you push the "+" keys then lean your thumb back slightly, the settings advance by 10 instead of 1. I didn't see this function listed in the manual but it was a welcome discovery. If you hit the information key by mistake it seems to pause things so it can be a bit tricky finding the sweet spot, at least initially. Overall, highly recommended!