Back Massager Pulse Muscle Stimulator Electro Pad for Waist and Back Acupuncture Treatment Massager Replacement Electrode Pads Package include: 1Pcs electrode Pads for knee 2Pcs electrode Pads for knee 4Pcs electrode Pads for knee 5Pcs electrode Pads for knee Features: Suitable for various medium frequency electronic physiotherapy machines. Help to improve blood circulation, promote metabolism and eliminate fatigue. Self adhesive, high adhesive, snap-on, convenient to use and reusable. Useful and safe accessory for medical care. Specifications: Material: Silicone + Gel Size(1pc):15*10cm Weight(1pc): 24g The number of electrode pads used The number of times the electrode is used depends on the cleanliness and oilyness of the human skin, so it is best to wash the skin with soap before use (alcohol is equally acceptable). By cleaning the skin, you can achieve better results and improve the frequency of use of the electrode. Note: It is also advised not to use the electrodes in the region of the carotid artery, just above the heart, the larynx and larger metal implants. In pacemaker carriers, serious heart rhythm problems, suffering from epilepsy patients is strongly discouraged from using an electrical stimulation device. Furthermore, the electrodes should not be applied to open wounds or diseased skin. _x000D_