Most E-Stim devices have a lower functionality than most TENS devices. These are much cheaper than commercially available E-Stim devices. These are usually used for E-Stim developed devices – but it is also suitable TENS devices for E-Stim. E-Stim is the abbreviation for electrostimulation (also known as „electrosex“) and describes a sexual practice that uses DC or low-frequency alternating currents for sexual stimulation.