... 1 machine2. RF can be Mono-polar, Bi-polar and Tri-polar, RF frequency 1-40MHz, adjustable 3. Microcomputer control ... Besides, single RF can be Mono-polar, Bi-polar or Tri-polar, which is used for skin rejuvenation, winkles removal, skin ... , adjustableDischarge interval1-4s, adjustableRF modeMono-polar, Bi-polar or Tri-polarRF frequency1-40MHz, adjustableRF energy5-450J, adjustableScreen10.4 inch color ...