<B>This infrared lights system combines red & infrared lights to largely function as a comfortable therapy wrap, with the wider lights covering the whole area on your knee, elbow, thigh, calf and ankle. Physical therapy ensures safe blood circulation stimulation, muscles relax, healing accelerate, and pain relief.</B><br> <B>This Therapy Wrap works to provide relaxation to muscles and relieves muscle spasms with LED lights reaching deep into muscle and soft tissue. It reduces pain and stiffness associated and increase local blood circulation which benefits to safe therapy for many situations.</B><br> <B>How to use</B><br> Place on body and secure straps. Plug into a electrical outlet. Press on/off switch to activate device. You can only see the red LED’s; the others are in the Infrared light spectrum and can’t be seen. Therapy time is 20 minutes and can be used multiple times per day.<br> <B>Package</B><br> * 1 X Pain Relief System <br>* 1 X Instruction Manual<br> * 1 X Charger + 1 X Controller<br> * 2 X Connector Strips<br> <B>Note</B><br>1. Less than 3 broken lights (total 176 lights) will not influence the effect of this light therapy. It still works well when there are three or less lights off. <br>2. The-less-than-three-light-broke-situation will not covered in the warranty policy. For detailed warranty information, please contact our customer service. <br>3. Please make sure your skin is cool and dry when using the lights wrap. <br>4. Do not strike or step on the lights system for it may damage the lights.<br> <B>Attention</B><br> People with heart disease or heart pacemaker can not use this light therapy system. Expectant mother, skin-ulcers and allergic people can not use it.<br> Please be patient as it may take several weeks or longer to experience optimal relief. Effect may be different to different people as their conditions can be varied and complex.