How Does Red Light Therapy Work? Red light therapy is a form of photobiomodulation that uses red and near-infrared wavelengths of light. Light consisting of these wavelengths has distinct properties that are thought to create specific health benefits. 5 Wavelengths Using 460:630:660:850:940 Wavelengths high-intensity LED lights, multifunctional red light therapy device, better effect. Red light therapy: for pain relic. Blue light therapy: for inflammation. Red light + Blue light therapy: for both pain and inflammation relief. 【The Benefits】 Overall skin health Faster wound healing Scar reduction Hair growth Pain relief Improve collagen production Increases blood flow Accelerates muscle repair 【Product Specifications】 Battery model: Rechargeable battery Power: 9W Voltage: 3.6V Rated Capacity: 2500mAh WHAT'S INCLUDED: 1x Rotsha Red Light Therapy Torch 1x Device Hanging Strap 2x Rechargeable Batteries 1x Battery Storage Case 1x User Manual