I love these TENS machines! They are easy to recharge, with the charging station holding a charge and not needing to be plugged in while they are charging. The digital display is handy to see what level of stimulation is selected, something I've not seen on previous units I've purchased elsewhere. The magnetic connection is great, and makes it a lot easier to use these units on your back where you can't see where you are placing them. I've made good use of them since they arrived, and definitel...