NOTE: International orders for vibration therapy equipment should be placed a minimum of 21 days in advance, and the additional accessories & modifications required to outfit the unit for international operations carry an additional $1,000 charge per unit. Using a transformer will void the warranty on the unit; vibrational therapy must occur at specific frequencies in order to be effective, and this is affected not by the voltage, but by the Hertz of the electrical current (transformers will not affect the Hertz, only the voltage, of the incoming current).