I have it, it does work, not to sure how well it kills of parasites in your blood, but it does send a good current into your wrists, its like a heart beat, it leaves a few burns so it's definitely working, whether it is working as becks is supposed to is another thing, i had it on 999 24 7 on my wrist and the battery lasted about 3 days so took it down to 500 mm the battery won't last long at all on 999 so, but yeah its really hard to know whether it successfully kills parasites in your blood, as well as the original becks, unless you take some blood before and after to see, so, i like it though, but yeah, who knows.