The E3 Duo™ controller is two machines in one! It contains the programs for both etching and electroforming/plating. It is designed to make professional jewelry pieces right from your home studio. UNITS ARE 220V FOR AUSTRALIA AND COME WITH AN AUSTRALIAN ELECTRICAL PLUG. (CONTROLLER ONLY, SUPPLIES SOLD SEPARATELY) E3 Duo™ Electroforming/Plating and Etching Controller Specs: 2 Amp, 6 Volts max LED display to show power levels for etching or current level for electroforming/plating. For electroforming: Adjustable range from 40mA-2Amp (current based system). It covers pieces quickly with a smooth deposition of metal. For plating: Gold, silver and other metals can be plated using the controller. Simply use a low current with the appropriate anodes and solutions needed for the metal you are plating. For etching: Adjustable power ranging from 1/2 watt-6 watts. This etching feature has a knob for an adjustable range. The led display shows power: L1 (low), L2 (medium) or L3 (high) Copper, brass, bronze, silver and sterling silver can be electrically etched with the controller. Small and compact-perfect for the home studio or for the classroom. (5" x 3" x .75") International controller is sold with a universal power supply Controller is made with high quality parts with superior stainless steel clips. Made in USA