Deep Penetrating Light therapy was first used by NASA to treat injuries in space. Now it is available for home use. DPL® Nüve Handheld Light Therapy system targets swollen joints, inflammation and stiffness with soothing, healing LED light. This infrared light penetrates deep into the muscle tissue to help cellular regeneration, which speeds up healing and pain relief. Use for just a few minutes a day to loosen tight muscles, increase blood circulation, reduce swelling, and increase your quality of life. Non-invasive and drug free. FDA listed. Includes travel bag and AC adapter. Auto shutoff. This unit is sold as Light Therapy and anyone who's taking medication making them photo sensitive or sensitive to sun light, should know that this product is not for them if they read the information supplied with their medication. Being sensitive to sunlight doesn't necessarily mean that you will be photo-sensitive to the wave lengths emitted by this device. As with any device, it's always a good idea to check with your doctor before starting any treatment, whether it be prescription, OTC, or home remedy. 7½"L x 2¼"W x 1¾"D. Imported.