Pain Away is a registered class IIa medical device providing totally safe, portable, drug-free pain relief. How Pain Away Works Pain Away is a low frequency (1-2 Hz) stimulator fed by quartz crystals. It requires no power source or batteries. The pen is activated by pressing the silver button at one end. The pens effectiveness is based on a proven medical technique called Transcutaneous Electrical Nerve Stimulation (TENS). This technique is used to relieve severe & chronic pain from minor injuries. The portable instant pain relief device requires no batteries or mains supply. It is activated by quartz crystals as a low frequency simulator. Based on TENS treatment it is helpful for chronic or minor injuries. Main Features of Pain Away: Pain Away has no medical side effects Drug-free Safe & simple to use Can be used for a range of conditions Can be used anywhere any time Fully self-contained, small & light No leads or pads required Works over clothing Needs no batteries or maintenance A Class 2 Medical device