"[This review was collected as part of a promotion.] It took me a couple of hours to read and understand how to use these. Kept picking up the instructions and putting them down as a little bit technical for me.once I realised what programme I needed and where to place the sticky pads, I managed to get it going. I had to stand in front of a mirror to see where to place the pads on my back. It was actually quite a nice relaxing feeling once the pulses started and I did feel a less discomfort in my lower back so I will persevere with it, worth it if it relieves pain"