Unlike a TENS machine, you will not feel heat or vibration with ActiPatch. ActiPatch is completely sensation free. TENS machines are designed to provide pain relief by blocking pain signals, with treatments typically lasting 20-30 minutes. ActiPatch was designed to reduce pain and inflammation and thereby promote healing. Unlike a TENS machine, ActiPatch can be used continuously and for long periods, a lightweight solution that is attached with adhesive or inserted in a wrap/bandage.