What is "violet wand"

n. A device used for the application of low-current, high-voltage electricity to the body using an Oudin coil, originally claimed to have medical benefits and more recently used in sadomasochistic sex play.

Violet wands are modern electrical sexual or kink stimulation toys. They are used for the application of low current, high voltage (min 35 kV to max 65 kV typically), high-frequency electricity to the body. They are most commonly used in BDSM though erotic sensation play is also possible with them.