Although early e-stim units used only a simple, pulsed , sinusoidal wave , newer units use more complex wave forms and also allow for the use of ambient sound or prerecorded wave forms like music or specially designed computer files for specific types of stimulation.
An electrode is used to deliver the actual electrostimulation to the body.
There are now sites dedicated to the creation of MP3 files specifically for erotic journeys or symphonies, which can include such routines as rewards, punishments, very strong, and pleasantly soft portions.
The first analog devices became popular during the mids, and during the late s digital devices also became available.
Description: Typically it is recommended to avoid any lubricant that contains silicone since it is an insulator and hence reduces conductivity.