I ordered the unit to support my athletic activities and have to say that I highly recommend it. The programs can be freely selected and include both muscle gain and pain relief as well as different forms of aerobic and anaerobic muscle support. The respective strength of the muscle treatment can be adjusted to 60mV right and left free, thus the intensity of the contraction is determined. The equipment is of good quality processed and robust construction, so it can be taken and used anywhere. Only the electrodes, which consist of a gel-like substance will be used relatively quickly and it is recommended that these maintain described after each use as described in the instructions, so that they are made to last. A repeat order will, however, be difficult to avoid. Even from a use of the electrodes of two people for hygienic reasons should be waived. All in all a very good product that I can for the purpose of stimulating toning recommend athletes and non-athletes.