Check out the review by Steven John from The Manual. Please note that Steven was provided a device to keep by Compex at no charge, and his opinions in the review are his own. Go to https://www.themanual.com/culture/compex-sport-estim/ to see this article and more.
First of all, forgive the “shockingly easy to use” pun. I went for the low-hanging fruit, yes; this device does not actually shock you, no. Rather the Compex Sport Elite uses electrostimulation (estim) — brief pulses of electricity transmitted through the muscles via electrode, e.g. — to aid with everything from improved blood circulation to increased muscle mass to faster post-exercise recovery. And yes, this Electric Muscle Stimulator really can do all that, and more. You just have to spend the time to learn to use it properly, and you have to get over the fact that using the Compex EMS is kind of really strange at first.