NATURAL PAIN RELIEF: The red light therapy torch using optimized wavelengths to alleviate back, shoulder & knee discomfort. Good for muscle fatigue, workout restore & soreness without side-effects. Red Light Device: Tri-wavelength technology makes the perfect energy distribution among 3 wavelengths of 630nm 660nm and 850nm, bringing you the advantages of both red and infrared light. The enlarged battery of 2600 mAh gives the sufficient power to the infrared light therapy and keeps you from frequent charging. Easy & Effortless: LED Light for natural relief has a built-in 5-minute timer, and has a very portable lightweight size. The supporting brackets can free your hand during cure, you can easily and effortlessly use it any time anywhere on your knee, shoulder, neck, wrist, finger, waist, ankle, face, or any other acheful area. What's more, this device is also applicable to pets, such as dog, cat, etc.