DR-HO’S® Circulation Promoter is designed to help increase circulation, reduce swelling, alleviate aching feet and legs, and relieve pain, relax tension and stiffness. The Circulation Promoter is powered by the Pain Therapy System and combines TENS, EMS and DR-HO'S proprietary AMP technology to alleviate pain in the feet and lower limbs, increase blood circulation and prevent the body from adapting to the stimulation. It's the combination of these three pain relief technologies that make DR-HO'S TENS machines unlike any others on the market. Directions: Ensure 2 AA batteries are inserted into the Pain Therapy System.Insert one end of the connecting wire into the Pain Therapy System device and insert the other end of the connecting wire into the Circulation Promoter.Use the spray bottle to spray water on the foot pads on the Circulation Promoter and then use the spray bottle to spray water on the bottom of your bare feet.Place bare feet onto the footpads on the Circulation Promoter.To activate, slowly turn the intensity dial on the Pain Therapy device until you begin to feel the sensation. Adjust the mode to your desired massage specifications and set the automatic timer by pressing the time button to your desired duration: 10, 20 or 40 minutes.Caution: Do not use if preganant or have a pacemaker.