Voltage is 220-240v via a UK 3pin power plug. EU 2pin plug included too Charge it. Swap it. Share it. Work it. Designed to work with all the Slendertone system garments (I have all of them available, check my shop under slendertone products) Just the controller included The System controller powers the full range of System toning garments, simply plug it into your chosen garment and let the toning begin. The rechargeable hand-held controller displays information on toning programmes, time and intensity all in the palm of your hand. The unique interchangeability of the System controller allows you and your friend or partner to share the same controller with a range of System garments! Interchangeable Fully Rechargeable Easy To Use Hand-held display