IontoPatch self-contained wireless iontophoresis technology eliminates need for external batteries or wires. IontoPatch allows patient to return to daily activities while receiving time-released iontophoresis. IontoPatch is made of flexible, breathable material. Technician applies medication directly to the IontoPatch electrode. Shuts off automatically when prescribed dose has been administered. IontoPatch SP designed to treat smaller anatomical areas, including fingers and Achilles tendon in a 14-hour average patient wear time. 40mA-min.