Laser Acupuncture Pen is the newest hand-held device with rechargeable lithium batteries designed for both human and animals. Single wavelength like 635nm, 650nm, 670nm, 810nm, 905nm, 940nm or mixed wavelength such as MLS can rapidly penetrate the injuries or lesions to improve wound and soft tissue healing, reduce inflammation and give relief for both acute and chronic pain, popularly used for soft tissue injuries, joint conditions, neuropathic pain, nerve regeneration and other body pain.