This is a Beyond Beauty product which means it has been sourced, tried and tested and finally declared one of the most new and innovative heroes out there. The handheld Electro-Sonic DF Mobile Device combines two sophisticated technologies, low frequency sonophoresis (sound waves) and pulsed iontophoresis (electric current) designed to be used with specific Environ products to help deliver more essential nutrients to where the skin needs them most, making a lasting difference to the appearance of your skin.